JSROOT - axis stuck after unzoom

[valerio.formato]

Dear ROOTers,
I’m currently using JSROOT to display a histogram in a web browser. The histogram is generated by a small section of python code executed by the webserver and passed as a JSON string to a JSROOT.redraw call

python:

hist = ROOT.TH2D("hist", blablablablabla)
for data in bufferToPlot:
    hist.Fill( data[0], data[1] )
jsonResp = ROOT.TBufferJSON.ConvertToJSON(hist)
return jsonResp #this goes back as POST response

Javascript:

  $.post(
    url,
    dat,
    function(data) {
      dataToPlot = data;
      var obj = JSROOT.parse( dataToPlot );
      JSROOT.redraw("ltmondrawing", obj, "colz");
    }
  );

The problem I’m facing is that when I request the first plot everything is fine, then I zoom the y axis, and unzoom it, then request another plot, which will have a different y axis range, but in the browser window the y axis is still the first plot one (see attachment).

Cheers,
Valerio

Plot 1:

Plot 2:

Plot 2 after zoom/unzoom of Plot 1 y axis:

[couet]

I think @linev can help.

[linev]

Hi,

JSROOT.redraw() should be used if you intend to redraw same histogram preserving some interactive settings (like zoomed range). If you want to draw new histogram in the same div, just do:

JSROOT.cleanup("ltmondrawing");
JSROOT.draw("ltmondrawing", obj, "colz");

Regards,
Sergey

[valerio.formato]

Thanks Sergey! Exactly what I needed!

btw, I’m having difficulties finding documentation for all the possible actions available in JSROOT. Can you point me in some general direction, if any?

Cheers,
Valerio

[linev]

Hi Valerio,

Short info you can find here:

root-project/jsroot/blob/master/docs/JSROOT.md#objects-drawing

Regards,
Sergey