Exporting
2 minute read
The Export panel writes trace data to CSV — either a range out of what is already plotted, or a continuous recording of a live session.
Both exports contain visible traces only; hidden traces are left out.
Exporting a range
- Click Export CSV. A hint appears: Drag edges to adjust, click Save to download, or Escape to cancel.
- Drag across the plot to mark the range. The band shows the Y value of every trace at its left edge, so you can check you caught the event you meant.
- Drag either edge to fine-tune, or type exact values in From / To.
- Click Save to download.
Press Escape at any point to cancel.
You can also skip the dragging: type From and To, then click Export CSV → Save.
Snap
With Snap on, both range edges snap to a round step derived from the visible X range (about a thirtieth of the window), which makes it easy to export clean intervals such as 2.0 s – 4.0 s. The snap step follows the zoom level.
CSV format
The file is named YYYY-MM-DD_HH-MM-SS_PlotData.csv. The first column is time in milliseconds, and each following
column is one visible trace, prefixed with its Y axis:
X Time (ms),Y1 root/ManipulatorControl/jointPositionsActual (ch. 0),Y2 root/ManipulatorControl/jointTorquesActual (ch. 0)
0.000000000,0.01690506241,-2.145820847
3.000000000,0.01690712104,-2.145851771
- Rows are the union of all trace timestamps, sorted; a cell is empty when that trace has no sample at that time.
- Values carry 10 significant digits.
- The
Y1…Y4prefix and the(ch. N)suffix let Replay restore each trace to its original axis and channel when you load the file back into Desk.
Continuous recording
Recording captures the live stream as it arrives, independent of what the plot buffer still holds.
- Click Record. The button turns into Stop and a timer shows the elapsed time.
- Click Stop to finish. The CSV downloads immediately.
Files are named YYYY-MM-DD_HH-MM-SS_RecordedData_partN.csv.
Note
Long recordings are split. The buffer holds 1 000 000 points; at 900 000 it is flushed to …_part1.csv and the next part starts. Keep the browser open, and allow multiple downloads, until every part has been written.
Recording needs at least one visible trace, and stops by itself if the last visible trace is removed.