XY_DATA Drawing Numerical Data as XY Plots and/or Writing it to File

XY_DATA Drawing numerical data as XY plots and/or writing it to file

The XY_DATA command lets you extract scalar data values in a way similar to WRITE , but in this case over a range of times, and to plot them and/or write them to file.

XY_DATA is similar in principle to TH_DATA , the T/HIS link, but it operates on low-frequency data extracted from the plot database files (.ptf etc) rather than high frequency data from the time-history ones (.xtf etc). The TH_DATA command is described in T/HIS the D3PLOT <=> T/HIS link

Extracted values are buffered in backing store, and remain there available for subsequent replotting until superseded by further data extraction. This backing store is limited in size, but it should be adequate to cope with extracting data for at least 500,000 items.