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| 2 | # ---------------------------------------------------------------------- |
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| 3 | # COMPONENT: curve - extracts data from an XML description of a field |
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| 4 | # |
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| 5 | # This object represents a curve of data in an XML description of |
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| 6 | # simulator output. A curve is similar to a field, but a field is |
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| 7 | # a quantity versus position in device. A curve is any quantity |
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| 8 | # versus any other quantity. This class simplifies the process of |
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| 9 | # extracting data vectors that represent the curve. |
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| 10 | # ====================================================================== |
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| 11 | # AUTHOR: Michael McLennan, Purdue University |
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| 12 | # Copyright (c) 2004-2005 Purdue Research Foundation |
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| 13 | # |
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| 14 | # See the file "license.terms" for information on usage and |
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| 15 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 16 | # ====================================================================== |
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| 17 | package require Itcl |
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| 18 | package require BLT |
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| 19 | |
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| 20 | namespace eval Rappture { # forward declaration } |
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| 21 | |
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| 22 | itcl::class Rappture::Curve { |
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| 23 | constructor {xmlobj path} { # defined below } |
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| 24 | destructor { # defined below } |
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| 25 | |
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| 26 | public method components {{pattern *}} |
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| 27 | public method mesh {{what -overall}} |
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| 28 | public method values {{what -overall}} |
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| 29 | public method limits {which} |
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| 30 | public method hints {{key ""}} |
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| 31 | public method xmarkers {} |
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| 32 | public method ymarkers {} |
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| 33 | |
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| 34 | protected method _build {} |
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| 35 | |
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| 36 | private variable _xmlobj "" ;# ref to lib obj with curve data |
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| 37 | private variable _curve "" ;# lib obj representing this curve |
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| 38 | private variable _comp2xy ;# maps component name => x,y vectors |
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| 39 | private variable _hints ;# cache of hints stored in XML |
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| 40 | |
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| 41 | private variable _xmarkers "";# list of {x,label,options} triplets. |
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| 42 | private variable _ymarkers "";# list of {y,label,options} triplets. |
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| 43 | |
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| 44 | private common _counter 0 ;# counter for unique vector names |
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| 45 | } |
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| 46 | |
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| 47 | # ---------------------------------------------------------------------- |
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| 48 | # CONSTRUCTOR |
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| 49 | # ---------------------------------------------------------------------- |
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| 50 | itcl::body Rappture::Curve::constructor {xmlobj path} { |
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| 51 | if {![Rappture::library isvalid $xmlobj]} { |
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| 52 | error "bad value \"$xmlobj\": should be LibraryObj" |
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| 53 | } |
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| 54 | set _xmlobj $xmlobj |
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| 55 | set _curve [$xmlobj element -as object $path] |
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| 56 | |
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| 57 | # build up vectors for various components of the curve |
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| 58 | _build |
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| 59 | } |
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| 60 | |
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| 61 | # ---------------------------------------------------------------------- |
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| 62 | # DESTRUCTOR |
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| 63 | # ---------------------------------------------------------------------- |
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| 64 | itcl::body Rappture::Curve::destructor {} { |
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| 65 | itcl::delete object $_curve |
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| 66 | # don't destroy the _xmlobj! we don't own it! |
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| 67 | |
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| 68 | foreach name [array names _comp2xy] { |
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| 69 | eval blt::vector destroy $_comp2xy($name) |
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| 70 | } |
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| 71 | } |
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| 72 | |
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| 73 | # ---------------------------------------------------------------------- |
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| 74 | # USAGE: components ?<pattern>? |
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| 75 | # |
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| 76 | # Returns a list of names for the various components of this curve. |
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| 77 | # If the optional glob-style <pattern> is specified, then it returns |
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| 78 | # only the component names matching the pattern. |
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| 79 | # ---------------------------------------------------------------------- |
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| 80 | itcl::body Rappture::Curve::components {{pattern *}} { |
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| 81 | set rlist "" |
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| 82 | foreach name [array names _comp2xy] { |
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| 83 | if {[string match $pattern $name]} { |
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| 84 | lappend rlist $name |
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| 85 | } |
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| 86 | } |
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| 87 | return $rlist |
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| 88 | } |
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| 89 | |
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| 90 | # ---------------------------------------------------------------------- |
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| 91 | # USAGE: mesh ?<name>? |
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| 92 | # |
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| 93 | # Returns the xvec for the specified curve component <name>. |
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| 94 | # If the name is not specified, then it returns the vectors for the |
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| 95 | # overall curve (sum of all components). |
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| 96 | # ---------------------------------------------------------------------- |
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| 97 | itcl::body Rappture::Curve::mesh {{what -overall}} { |
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| 98 | if {[info exists _comp2xy($what)]} { |
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| 99 | return [lindex $_comp2xy($what) 0] ;# return xv |
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| 100 | } |
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| 101 | error "bad option \"$what\": should be [join [lsort [array names _comp2xy]] {, }]" |
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| 102 | } |
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| 103 | |
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| 104 | # ---------------------------------------------------------------------- |
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| 105 | # USAGE: values ?<name>? |
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| 106 | # |
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| 107 | # Returns the xvec for the specified curve component <name>. |
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| 108 | # If the name is not specified, then it returns the vectors for the |
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| 109 | # overall curve (sum of all components). |
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| 110 | # ---------------------------------------------------------------------- |
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| 111 | itcl::body Rappture::Curve::values {{what -overall}} { |
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| 112 | if {[info exists _comp2xy($what)]} { |
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| 113 | return [lindex $_comp2xy($what) 1] ;# return yv |
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| 114 | } |
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| 115 | error "bad option \"$what\": should be [join [lsort [array names _comp2xy]] {, }]" |
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| 116 | } |
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| 117 | |
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| 118 | # ---------------------------------------------------------------------- |
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| 119 | # USAGE: limits x|xlin|xlog|y|ylin|ylog |
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| 120 | # |
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| 121 | # Returns the {min max} limits for the specified axis. |
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| 122 | # ---------------------------------------------------------------------- |
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| 123 | itcl::body Rappture::Curve::limits {which} { |
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| 124 | set min "" |
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| 125 | set max "" |
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| 126 | switch -- $which { |
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| 127 | x - xlin { set pos 0; set log 0; set axis xaxis } |
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| 128 | xlog { set pos 0; set log 1; set axis xaxis } |
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| 129 | y - ylin - v - vlin { set pos 1; set log 0; set axis yaxis } |
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| 130 | ylog - vlog { set pos 1; set log 1; set axis yaxis } |
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| 131 | default { |
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| 132 | error "bad option \"$which\": should be x, xlin, xlog, y, ylin, ylog, v, vlin, vlog" |
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| 133 | } |
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| 134 | } |
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| 135 | |
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| 136 | blt::vector create tmp zero |
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| 137 | foreach comp [array names _comp2xy] { |
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| 138 | set vname [lindex $_comp2xy($comp) $pos] |
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| 139 | $vname variable vec |
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| 140 | |
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| 141 | if {$log} { |
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| 142 | # on a log scale, use abs value and ignore 0's |
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| 143 | $vname dup tmp |
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| 144 | $vname dup zero |
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| 145 | zero expr {tmp == 0} ;# find the 0's |
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| 146 | tmp expr {abs(tmp)} ;# get the abs value |
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| 147 | tmp expr {tmp + zero*max(tmp)} ;# replace 0's with abs max |
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| 148 | set vmin [blt::vector expr min(tmp)] |
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| 149 | set vmax [blt::vector expr max(tmp)] |
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| 150 | } else { |
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| 151 | set vmin $vec(min) |
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| 152 | set vmax $vec(max) |
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| 153 | } |
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| 154 | |
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| 155 | if {"" == $min} { |
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| 156 | set min $vmin |
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| 157 | } elseif {$vmin < $min} { |
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| 158 | set min $vmin |
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| 159 | } |
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| 160 | if {"" == $max} { |
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| 161 | set max $vmax |
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| 162 | } elseif {$vmax > $max} { |
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| 163 | set max $vmax |
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| 164 | } |
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| 165 | } |
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| 166 | blt::vector destroy tmp zero |
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| 167 | |
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| 168 | set val [$_curve get $axis.min] |
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| 169 | if {"" != $val && "" != $min} { |
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| 170 | if {$val > $min} { |
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| 171 | # tool specified this min -- don't go any lower |
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| 172 | set min $val |
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| 173 | } |
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| 174 | } |
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| 175 | |
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| 176 | set val [$_curve get $axis.max] |
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| 177 | if {"" != $val && "" != $max} { |
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| 178 | if {$val < $max} { |
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| 179 | # tool specified this max -- don't go any higher |
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| 180 | set max $val |
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| 181 | } |
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| 182 | } |
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| 183 | |
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| 184 | return [list $min $max] |
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| 185 | } |
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| 186 | |
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| 187 | # ---------------------------------------------------------------------- |
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| 188 | # USAGE: hints ?<keyword>? |
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| 189 | # |
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| 190 | # Returns a list of key/value pairs for various hints about plotting |
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| 191 | # this curve. If a particular <keyword> is specified, then it returns |
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| 192 | # the hint for that <keyword>, if it exists. |
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| 193 | # ---------------------------------------------------------------------- |
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| 194 | itcl::body Rappture::Curve::hints {{keyword ""}} { |
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| 195 | if {![info exists _hints]} { |
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| 196 | foreach {key path} { |
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| 197 | group about.group |
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| 198 | label about.label |
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| 199 | color about.color |
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| 200 | style about.style |
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| 201 | type about.type |
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| 202 | xlabel xaxis.label |
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| 203 | xdesc xaxis.description |
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| 204 | xunits xaxis.units |
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| 205 | xscale xaxis.scale |
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| 206 | xmin xaxis.min |
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| 207 | xmax xaxis.max |
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| 208 | ylabel yaxis.label |
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| 209 | ydesc yaxis.description |
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| 210 | yunits yaxis.units |
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| 211 | yscale yaxis.scale |
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| 212 | ymin yaxis.min |
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| 213 | ymax yaxis.max |
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| 214 | } { |
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| 215 | set str [$_curve get $path] |
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| 216 | if {"" != $str} { |
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| 217 | set _hints($key) $str |
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| 218 | } |
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| 219 | } |
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| 220 | |
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| 221 | if {[info exists _hints(xlabel)] && "" != $_hints(xlabel) |
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| 222 | && [info exists _hints(xunits)] && "" != $_hints(xunits)} { |
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| 223 | set _hints(xlabel) "$_hints(xlabel) ($_hints(xunits))" |
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| 224 | } |
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| 225 | if {[info exists _hints(ylabel)] && "" != $_hints(ylabel) |
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| 226 | && [info exists _hints(yunits)] && "" != $_hints(yunits)} { |
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| 227 | set _hints(ylabel) "$_hints(ylabel) ($_hints(yunits))" |
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| 228 | } |
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| 229 | |
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| 230 | if {[info exists _hints(group)] && [info exists _hints(label)]} { |
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| 231 | # pop-up help for each curve |
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| 232 | set _hints(tooltip) $_hints(label) |
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| 233 | } |
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| 234 | } |
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| 235 | |
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| 236 | if {$keyword != ""} { |
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| 237 | if {[info exists _hints($keyword)]} { |
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| 238 | return $_hints($keyword) |
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| 239 | } |
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| 240 | return "" |
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| 241 | } |
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| 242 | return [array get _hints] |
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| 243 | } |
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| 244 | |
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| 245 | # ---------------------------------------------------------------------- |
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| 246 | # USAGE: _build |
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| 247 | # |
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| 248 | # Used internally to build up the vector representation for the |
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| 249 | # curve when the object is first constructed, or whenever the curve |
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| 250 | # data changes. Discards any existing vectors and builds everything |
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| 251 | # from scratch. |
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| 252 | # ---------------------------------------------------------------------- |
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| 253 | itcl::body Rappture::Curve::_build {} { |
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| 254 | # discard any existing data |
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| 255 | foreach name [array names _comp2xy] { |
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| 256 | eval blt::vector destroy $_comp2xy($name) |
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| 257 | } |
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| 258 | catch {unset _comp2xy} |
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| 259 | |
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| 260 | # |
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| 261 | # Scan through the components of the curve and create |
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| 262 | # vectors for each part. |
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| 263 | # |
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| 264 | foreach cname [$_curve children -type component] { |
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| 265 | set xv "" |
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| 266 | set yv "" |
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| 267 | |
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| 268 | set xydata [$_curve get $cname.xy] |
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| 269 | if {"" != $xydata} { |
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| 270 | set xv [blt::vector create \#auto] |
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| 271 | set yv [blt::vector create \#auto] |
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| 272 | set tmp [blt::vector create \#auto] |
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| 273 | $tmp set $xydata |
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| 274 | $tmp split $xv $yv |
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| 275 | blt::vector destroy $tmp |
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| 276 | } |
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| 277 | |
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| 278 | if {$xv != "" && $yv != ""} { |
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| 279 | set _comp2xy($cname) [list $xv $yv] |
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| 280 | incr _counter |
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| 281 | } |
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| 282 | } |
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| 283 | # Creates lists of x and y marker data. |
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| 284 | set _xmarkers {} |
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| 285 | set _ymarkers {} |
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| 286 | foreach cname [$_curve children -type "marker" xaxis] { |
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| 287 | set at [$_curve get "xaxis.$cname.at"] |
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| 288 | set label [$_curve get "xaxis.$cname.label"] |
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| 289 | set styles [$_curve get "xaxis.$cname.style"] |
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| 290 | set data [list $at $label $styles] |
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| 291 | lappend _xmarkers $data |
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| 292 | } |
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| 293 | foreach cname [$_curve children -type "marker" yaxis] { |
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| 294 | set at [$_curve get "yaxis.$cname.at"] |
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| 295 | set label [$_curve get "yaxis.$cname.label"] |
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| 296 | set styles [$_curve get "yaxis.$cname.style"] |
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| 297 | set data [list $at $label $styles] |
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| 298 | lappend _xmarkers $data |
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| 299 | } |
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| 300 | } |
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| 301 | |
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| 302 | # ---------------------------------------------------------------------- |
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| 303 | # USAGE: xmarkers |
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| 304 | # |
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| 305 | # Returns the list of settings for each marker on the x-axis. |
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| 306 | # If no markers have been specified the empty string is returned. |
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| 307 | # ---------------------------------------------------------------------- |
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| 308 | itcl::body Rappture::Curve::xmarkers {} { |
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| 309 | return $_xmarkers; |
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| 310 | } |
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| 311 | |
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| 312 | # ---------------------------------------------------------------------- |
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| 313 | # USAGE: ymarkers |
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| 314 | # |
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| 315 | # Returns the list of settings for each marker on the y-axis. |
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| 316 | # If no markers have been specified the empty string is returned. |
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| 317 | # ---------------------------------------------------------------------- |
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| 318 | itcl::body Rappture::Curve::ymarkers {} { |
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| 319 | return $_ymarkers; |
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| 320 | } |
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| 321 | |
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