wxGUI Temporal Plot Tool

Note: This document is for an older version of GRASS GIS that is outdated. You should upgrade, and read the current manual page.

DESCRIPTION
NOTES
SEE ALSO
AUTHOR

DESCRIPTION

The Temporal Plot Tool is a wxGUI component that queries and plots the values of a point, defined by a coordinate pair, in one or more temporal datasets (strds, stvds, str3ds).

Supported features:

temporal datasets with interval/point and absolute/relative time,

show simple linear regression model line with calculated formula

y = a + b*x (y is dependent variable, a is intercept, b is slope, x is explanatory variable)

and

r-squared (parameter of goodness-of-fit measure for linear regression model)

pop-up annotations with values information,
query and plot multiple points via the command line,
zoom and pan,
change labels to x and y axes,
add title to the plot, and
export the time series values to a CSV file (x axis data has date time string format, if you want to use for calculating simple regression model in the R environment, LibreOffice etc., you will obtain a different calculated formula
```
y = a + b*x
```
because these software packages use a reference date other than the UNIX Epoch time (00:00:00 UTC on 1 January 1970)).

Figure: Temporal Plot Tool

To optionally add a title to the temporal plot and/or change the x and y axes labels, first type the desired text and then click Draw as showed below.

Figure: Add title and labels to a time series plot

To export the time series data to a text file (date and data values), type a name for the file and click Draw again. Optionally, set the check-box to print headers, as well.

g.gui.tplot export time series as csv file

Figure: Export time series values to a text file

NOTES

g.gui.tplot requires the Python plotting library Matplotlib.

AUTHOR

Luca Delucchi, Fondazione Edmund Mach, Italy

SOURCE CODE

Available at: wxGUI Temporal Plot Tool source code (history)

Latest change: Thu Feb 3 11:10:06 2022 in commit: 73413160a81ed43e7a5ca0dc16f0b56e450e9fef