JSON Formats

Saving data in JSON (Javascript Object Notation) format is useful for web-based graphing and presentations.
This option is only available in Visual3D version 2020.04.03 and later.

Report Graph Export

The first option is limited to just saving the data used in a report graph. This requires that you first create your report and graphs (Documented here). Select the report you want to export, and select the JSON output option from the pop-up dialog.

If the mean and standard deviation were displayed in the graph, they will be in the exported data too. The JSON format for mean and std dev are similare to the normal ASCII output in that the 2 X-components are listed first, and then the 2 Y components. The graphed data is listed in X and Y sections together.

The JSON output is a single array for the graph, with sub-arrays for signal information and for data.

{"graph_title_here": [

{"report": [

{"signal_info": {

"filename": "C:\Visual3D\Data\Full Body Gait\FullBodyWalking.c3d",

"folder": "Original",

"type": "FRAME_NUMBERS",

"frames": 112,

"X_axis": "Time" } },

{"TIME": [0.933333, 0.941667, ...1.125000]}

]},

{"report": [

{"signal_info": {

"filename": "C:\Visual3D\Data\Full Body Gait\FullBodyWalking.c3d",

"folder": "Original",

"type": "LINK_MODEL_BASED",

"frames": 112,

"Y_axis": "Degrees"} },

{"RPV_ANGLE": `["no_data", "no_data", -1.811149, -1.873471, ...]}

]}

]}

Export Data As ASCII Command

The more general option it to use the |Export_Data_To_ASCII pipeline command. Simply check the JSON format checkbox in the dialog, or un-comment and change the USE JSON FORMAT = TRUE; from the textual interface.

The resulting JSON format for that (assuming only the Y and Z components were selected to export below) is:

{"Visual3D" : [

{"filename" : "Mean"},

{"filedata" : [

{"type" : "LINK_MODEL_BASED"},

{"folder": "ORIGINAL"},

{"name" : "LFT_ANGLE"},

{"frames" : "101"},

{"Y" : [-7.00954, ...,"nodata"

]},

{"Z" : [16.03672,

14.84915,13.68475, ...

]}

]}

]}