We have developed a set of visualisation options, most of them using technically on the — outstading tool for scientific investigations — matplotlib library for Python that generates wonderful figures and diagrams, see their examples page.
plot_area
plot_area.py shows the results of an accessibility computation as an areal contour plot using the origins' positions and the computed measures.
It generates figures as the following:
plot_area.py is a Python script and has to be started on the command line. Its options are given in the next table.
| Option | Default | Explanation |
|---|---|---|
| --from <OBJECTS> -f <OBJECTS> |
N/A (mandatory) | Defines the objecs (origins) to load. |
| --from.id <COLUMN_NAME> | “gid” | Defines the name of the field to read the object ids from. |
| --from.geom <COLUMN_NAME> | “the_geom” | Defines the name of the field to read the object geometries from. |
| --border <TABLE> -b <TABLE> |
N/A (mandatory) | Defines the border geometry to load. |
| --measures <TABLE> -m <TABLE> |
N/A (mandatory) | Defines the measures to load. |
| --index <MEASURES_INDEX> -i <MEASURES_INDEX> |
2 (equals avg_tt) | Defines the index of the measure to use. |
| --inner <TABLE> | N/A (optional) | Defines the optionsl inner boundaries. |
| --output <FILE> -o <OUTPUT> |
N/A (optional) | Defines the name of the graphic to generate. |
| --colmap <COLORMAP_NAME> -C <COLORMAP_NAME> |
RdYlGn_r | Defines the color map to use. |
| --title <TITLE> -t <TITLE> |
N/A (optional) | Sets the figure title. |
| --projection <EPSG_CODE> -p <EPSG_CODE> |
25833 | Sets the projection EPSG number. |
| --help -h |
N/A (optional) | Show a help message and exits. |
| --verbose -v |
N/A (optional) | Triggers verbose output. |
| --no-show -S |
N/A (optional) | Does not show the figure if set. |
plot_area.py is located in <UrMoAC>\tools\visualisation.