javascript - Recale plotly js z axis on zoom -


plotly.js 2d histograms , contour plots automatically generate z-axis range accommodates entire range of z values in dataset being plotted. fine start, when click-and-drag on plot zoom in, i'd z axis range zoom in accommodate range of z values on display; instead, z axis never changes. here's codepen (forked plotly examples, plotly) play around with: http://codepen.io/anon/pen/mkgyjp

(codepen code inline:

var x = []; var y = []; (var = 0; < 500; ++) {     x[i] = math.random();     y[i] = math.random() + 1; }  var data = [   {     x: x,     y: y,     type: 'histogram2d'   } ]; plotly.newplot('mydiv', data);

)

this seems pretty conventional behavior - missing option in docs somewhere this?

if there's no built-in option this, acceptable alternative solution manually set new z limits in zoom callback, easy enough implement per example: http://codepen.io/plotly/pen/dogexw - in case question becomes, there convenience method min , max z on display?

thanks in advance,

plotly.js doesn't have zoom-specific callback @ moment(follow issue updates).

one alternative add mode bar button updating colorscale range:

plotly.newplot('mydiv', data, {}, {   modebarbuttonstoadd: [{     name: 'click here update colorscale range',     click: function(graphdata) {                     var xrange = graphdata.layout.xaxis.range,             yrange = graphdata.layout.yaxis.range;          var zmin, zmax;          // code compute colorscale range         // given xrange , yrange         // example given these values:         zmin = 10;         zmax = 20;          plotly.restyle('mydiv', {zmin: zmin, zmax: zmax});     }      }] });

complete example: http://codepen.io/etpinard/pen/jgvnjv


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