## wxGUI Temporal Plot Tool

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.

*Figure: Export time series values to a text file*
*g.gui.tplot* requires the Python plotting library

Matplotlib.

*
Temporal data processing*

wxGUI

wxGUI components
Luca Delucchi,

Fondazione Edmund Mach, Italy

## SOURCE CODE

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

Latest change: Saturday Jul 16 18:18:43 2022 in commit: 63e79c72f61149092b9546da4bc343cc581aa180

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

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GRASS Development Team,
GRASS GIS 8.2.2dev Reference Manual