Using MATLAB offline converter on a specific 3D data results in incorrect scatter (2d) traces

Hello,

I am using MATLAB-Online project to convert several types of MATLAB figures.

When converting offline a specific data file, I got a problem. The data output contains correct scatter3d traces and some incorrect scatter (2d) traces.

The conversion seems to generate scatter (2d) when all the points are null.

Here is the demo data I was using:
S0307904X13006549_mmc3.fig.zip

Here is an extract of the data output:

{"xaxis": "x1", "yaxis": "y1", "type": "scatter3d", "visible": true, "x": [null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, 5.63689383869668, 5.64508977832848, 5.65341212279236, 5.66186758105614, 5.67046301659407, 5.67920545270251, 5.68810207811812, 5.6971602529484, 5.70638751492477, 5.71579122660169, 5.72537061117376, 5.73511647921464, 5.74501900827905, 5.75506808766196, 5.76525330686215, 5.77556394482557, 5.78598896000782, 5.79651698129621, 5.80713629983312, 5.81783486178309, 5.82860119863198, 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6.31607876049659, 6.32265678523466, 6.32931054457722, 6.33603463644034, 6.3428235908676, 6.34967186835346, 6.35657385831332, 6.36352387770268, 6.37051616978808, 6.37754490307229, 6.38460417203401, 6.39168965083804, 6.39880173648656, 6.40594168679499, 6.41311077454258, 6.42031028758959, 6.42754152900108, 6.43480581717726, 6.44210448599049, 6.44943888492919, 6.45681037924859, 6.46422035012848, 6.4716701948381, 6.47916132690821, 6.48669517631051, 6.49427318964444, 6.50189683033155, 6.50956757881745, 6.51728693278158, null, null, null, null], "y": [null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, 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{"xaxis": "x1", "yaxis": "y1", "type": "scatter", "visible": true, "x": [null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null], "y": [null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null], "mode": "lines", "showlegend": true}

This issue was related to PlotyJS issue: https://github.com/plotly/plotly.js/issues/1272.

Thanks for your help !

Inizia riproducendo la conversion offline con i dati demo collegati S0307904X13006549_mmc3.fig.zip e confronta le tracce scatter3d e scatter generate con la issue correlata di PlotlyJS. Il lavoro è completato quando il convertitore non emette più tracce scatter 2D errate per i punti i cui valori sono tutti null, preservando al contempo le tracce 3D valide.