docs - scatterhistogram, histogram2d

[danton267]

load carsmall
tbl = table(Horsepower,MPG,Cylinders);
s = scatterhistogram(tbl,'Horsepower','MPG', ...
    'GroupVariable','Cylinders','HistogramDisplayStyle','smooth', ...
    'LineStyle','-');

fig2plotly(gcf);

legend is not captured properly, there is an artifact histogram bar in the middle of the graph, and following error message is printed:

Index in position 1 exceeds array bounds.
We had trouble parsing the scatterhistogram object.
This trace might not render properly.

---

x0 = randn(100,1)./5. + 0.5;
y0 = randn(100,1)./5. + 0.5;
x1 = rand(50,1);
y1 = rand(50,1) + 1.0;

x = [x0; x1];
y = [y0; y1];

trace1 = struct(...
  'x', x0, ...
  'y', y0, ...
  'mode', 'markers', ...
  'marker', struct(...
    'symbol', 'circle', ...
    'opacity', 0.7), ...
  'type', 'scatter');

trace2 = struct(...
  'x', x1, ...
  'y', y1, ...
  'mode', 'markers', ...
  'marker', struct(...
    'symbol', 'square', ...
    'opacity', 0.7), ...
  'type', 'scatter');

trace3 = struct(...
  'x', x, ...
  'y', y, ...
  'type', 'histogram2d');

data = {trace1, trace2, trace3};

plotly(data);

Legend for two scatter categories is being overlayed by colorbar.

[danton267]

x = 2*randn(1000,1)+2;
y = 5*randn(1000,1)+3;
h = histogram2(x,y,'DisplayStyle','tile','ShowEmptyBins','on');

fig2plotly(gcf);

is incorrectly plotted

[gilbertogalvis]

This issue was fixed by PR #466

Example 1

load carsmall
tbl = table(Horsepower,MPG,Cylinders);
s = scatterhistogram(tbl,'Horsepower','MPG', ...
		  'GroupVariable','Cylinders','HistogramDisplayStyle','smooth', ...
		  'LineStyle','-');

fig2plotly(gcf);

Example 2

x0 = randn(100,1)./5. + 0.5;
y0 = randn(100,1)./5. + 0.5;
x1 = rand(50,1);
y1 = rand(50,1) + 1.0;

x = [x0; x1];
y = [y0; y1];

trace1 = struct(...
  'x', x0, ...
  'y', y0, ...
  'mode', 'markers', ...
  'marker', struct(...
    'symbol', 'circle', ...
    'opacity', 0.7), ...
  'type', 'scatter');

trace2 = struct(...
  'x', x1, ...
  'y', y1, ...
  'mode', 'markers', ...
  'marker', struct(...
    'symbol', 'square', ...
    'opacity', 0.7), ...
  'type', 'scatter');

trace3 = struct(...
  'x', x, ...
  'y', y, ...
  'type', 'histogram2d');

data = {trace1, trace2, trace3};

plotly(data);

This particular issue is because you are not setting the layout for the legend (you are leaving it by default). Then plotly position the legend wherever (in this case under the colorbar)

To fix it, you only have to configure the legend in the layout struct, in such a way that you correctly specify its position (avoiding that it is below the colorbar).

For this, please use the following code

x0 = randn(100,1)./5. + 0.5;
y0 = randn(100,1)./5. + 0.5;
x1 = rand(50,1);
y1 = rand(50,1) + 1.0;

x = [x0; x1];
y = [y0; y1];

trace1 = struct(...
		'x', x0, ...
		'y', y0, ...
		'mode', 'markers', ...
		'marker', struct(...
		  'symbol', 'circle', ...
		  'opacity', 0.7), ...
		'type', 'scatter');

trace2 = struct(...
		'x', x1, ...
		'y', y1, ...
		'mode', 'markers', ...
		'marker', struct(...
		  'symbol', 'square', ...
		  'opacity', 0.7), ...
		'type', 'scatter');

trace3 = struct(...
		'x', x, ...
		'y', y, ...
		'type', 'histogram2d');

data = {trace1, trace2, trace3};

layout = struct(...
		  'legend', struct(...
		'y', 1.0, ...
		'yanchor', 'bottom', ...
		'x', 1.0, ...
		'xanchor', 'right'), ...
		  'xaxis', struct('zeroline', false), ...
		  'yaxis', struct('zeroline', false) ...
		  );

plotly(data, struct('layout', layout));

Example 3

x = 2*randn(1000,1)+2;
y = 5*randn(1000,1)+3;
h = histogram2(x,y,'DisplayStyle','tile','ShowEmptyBins','on');

fig2plotly(gcf);