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g.gui.tplot(1grass) GRASS GIS User's Manual g.gui.tplot(1grass)

NAME

g.gui.tplot - Plots the values of temporal datasets.

KEYWORDS

general, GUI, temporal, plot

SYNOPSIS

g.gui.tplot
g.gui.tplot --help
g.gui.tplot [-hl] [stvds=name[,name,...]] [strds=name[,name,...]] [coordinates=east,north] [cats=string] [attr=string] [output=name] [csv=name] [title=string] [xlabel=string] [ylabel=string] [size=string] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:


Set the header of CSV file, to be used with csv option

Show simple linear regression model line

Allow output files to overwrite existing files

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog

Parameters:


Name of the input space time vector datasets

Name of the input space time raster datasets

Coordinates

Categories of vectores features
To use only with stvds

Name of attribute
Name of attribute which represent data for plotting

Name for output graphical file
Full path for output file containing the plot, ddd extension to specify format (.png, .pdf, .svg)

Name for output CSV file
Full path for the CSV file containing the plotted data

Title for plot
The title for the output plot

Label for x axis
The x axis label for the output plot

Label for y axis
The y axis label for the output plot

The size for output image
It works only with output parameter

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.
Figure: Export time series values to a text file

NOTES

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

SEE ALSO

Temporal data processing
wxGUI
wxGUI components

AUTHOR

Luca Delucchi, Fondazione Edmund Mach, Italy

SOURCE CODE

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

Accessed: Sunday Jan 22 07:38:37 2023

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GRASS 8.2.1