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, 5.83945211159075, 5.85043815341148, 5.86161314109058, 5.87303238903726, 5.88475277708649, 5.89683283750358, 5.90933286176889, 5.92231502798872, 5.93584354984999, 5.94998484812126, 5.96480519796425, 5.98026657891274, 5.99618555498522, 6.01236177154192, 6.02858736883488, 6.0446468343821, 6.06031710840586, 6.075367954665, 6.08956260808861, 6.10265870902218, 6.11440953162187, 6.12456828063123, 6.13305410541098, 6.14004917583194, 6.14576486134641, 6.15041810174679, 6.15423005334148, 6.15742498254285, 6.16022941510505, 6.16287154671415, 6.16558091877528, 6.16858836206604, 6.17212510787577, 6.17632123719976, 6.18112238422819, 6.18645468485145, 6.19224390235613, 6.19841523799837, 6.20489317036368, 6.2116013237274, 6.21846236575107, 6.22539793494539, 6.23232859839996, 6.23917402638176, 6.24588313817417, 6.25246798614153, 6.25894887473455, 6.26534639778948, 6.27168142850153, 6.27797511149794, 6.28424885705085, 6.29052433746826, 6.29682348570018, 6.30316849619612, 6.30958180639534, 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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null, null], "z": [null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, 0.146066820065401, 0.144152045226945, 0.142236364146095, 0.140319483611641, 0.13840117810348, 0.136481293826506, 0.134559752966614, 0.132636558182426, 0.130711797346742, 0.128785721502537, 0.126860330918397, 0.124939274068026, 0.123026192389182, 0.121124637619086, 0.119238062946056, 0.117369814217439, 0.115523121260261, 0.113701089372871, 0.111906691047438, 0.110142757984358, 0.108411824323837, 0.106711842272831, 0.105035932607347, 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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 !

Empieza reproduciendo la conversión offline con los datos de demostración vinculados S0307904X13006549_mmc3.fig.zip y compara las trazas scatter3d y scatter generadas con el issue relacionado de PlotlyJS. Se considera terminado cuando el conversor ya no emite trazas scatter 2D incorrectas para los puntos cuyos valores son todos null, al tiempo que conserva las trazas 3D válidas.