RE: [Plplot-general] Some inconsistencies in between plframe and the tcl API

[Maurice L. <mj...@ga...>]

Dean Clamons writes:
 > On Sunday, February 18, 2001 1:35 AM, Maurice LeBrun 
 > [SMTP:mj...@ga...] wrote:
 > > The color handling routines in plframe use X11 conventions rather than plplot
 > > ones, which is more appropriate for a widget.  I.e. it uses XParseColor to
 > > convert a string into its 3 rgb components.  This lets you use symbolic names
 > > or hex notation for color values.
 > >
 > That seems reasonable, but what is the calling sequence expected by plframe? 
 > For instance, the C calling sequence for plscmap1 is "plscmap1(r,g,b,ncol)". 
 > One would then expect the tcl calling sequence to be "plscmap1 r g b ncol". 
 > That is not what plframe expects. I haven't analyzed exactly what it wants, but 
 > the first parameter is supposed to be ncol.

The API is illustrated in the (unfortunately not currently working) file
plcolor.tcl.  Here are the salient bits: 

        set cmap0 "" 
        for {set i 0} {$i < $ncol0} {incr i} { 
            set cmap0 "$cmap0 $plcmap0_col($i)" 
        } 
        $plot.plwin cmd plscmap0 $ncol0 $cmap0 

for cmap0, and

        set cmap1 "" 
        for {set i 0} {$i < $ncol1} {incr i} { 
            set cmap1 \ 
                "$cmap1 $plcmap1_col($i) $plcmap1_pos($i) $plcmap1_rev($i)" 
        } 
        $plot.plwin cmd plscmap1 $ncol1 $cmap1 

for cmap1.  So, it's number of colors followed by a list.  Probably I
should've changed the command names to avoid confusion.. oh well.

I've been intending to rewrite the palette tools in itcl but haven't actually
gotten started on it yet.

-- 
Maurice LeBrun    mj...@ga...