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Viewing file: Select action/file-type: CLASS CanvasScale
(Defined in: jpgraph_canvtools.php : 25)
Class usage and Overview This class defines a scale which is meant to be used with canvas graphs to make it possibles to pecify a more convinient scale compared to absoilute pixels coordinates.
This will also let you scale the canvas without any coordinate changes.
Class Methods
Description Define a scale for canvas graphs. Note the scale values is optionally in this call. The may be later set witha call to the Set() method. See also CanvasScale::Set
Description SPecify min/max values for scale. Example $g = new CanvasGraph(400,200,'auto'); $g->SetMargin(5,11,6,11); $g->SetShadow(); $g->SetMarginColor("teal"); // We need to stroke the plotarea and margin before we add the // text since we otherwise would overwrite the text. $g->InitFrame(); // Create a new scale $scale = new CanvasScale($g); $scale->Set(0,$xmax,0,$ymax);
Description Translate a point to absolute screen coordinates See also CanvasScale::TranslateX and CanvasScale::TranslateY
Example $graph->img->Point($xt,$yt);
Description Translate X-value into absolute screen coordinates See also CanvasScale::Translate
Description Translate Y-value to absolute screen coordinates See also CanvasScale::Translate
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