wxGUI.iscatt(1)

📦
version 8.4.2 · 7 versions
, in fedora 44

✨ wxGUI.iscatt ✨

ok so bestie, welcome to the wxGUI.iscatt manual page from the GRASS GIS User's Manual 💖 this is the wxGUI Interactive Scatter Plot Tool and honestly? it's giving data-viz main character energy.

🌸 KEYWORDS 🌸

display, GUI, imagery, scatterplot, plot

🦋 DESCRIPTION 🦋

The Interactive Scatter Plot Tool lets you analyze a whole group of raster maps, no cap. It's built right into the Supervised Classification Tool (peep the screen shot below, it's right there 👀). You can also launch it from the Map Display Window via Analyze map → Interactive Scatter Plot Tool.

The whole vibe of this tool? everything is linked together — scatter plots linked to each other, and the map window linked to the scatter plots. Literally one big connected friend group 🫶.

Its headline feature is interactivity, which lets you:

  • work with multiple plots, which represent multiple raster band combinations ✨
  • highlight plotted points in open scatter plots according to the currently chosen pixels for classes by its training areas (this one's only supported in the Supervised Classification Tool, sorry bestie 😭)
  • define areas in plots, and then the tool will highlight the pixels in the map display window and the corresponding points in the other plots 💅
  • plot confidence ellipses 👑

🎀 TOOL CONTROLS LAYOUT 🎀

If editing mode is activated (that's the green polygon tool in the toolbar, iykyk), then the areas you selected in the scatter plots get highlighted. In the image you can see this area for the scatter plot of bands B_6, B_7 inside the ellipse. The opacity and color of the selected area can be set in settings. That area corresponds to the active class (in this case, clouds ☁️). Selected areas are a subset of areas which belongs to the category.

In editing mode you can select a certain area with the polygon, which you can create and edit using the tools in the editing toolbar. Once the area is selected, you can include or exclude it into the active category by clicking the first (plus) respectively second (minus) tool in the editing toolbar. In the map window the corresponding pixels are shown by the class raster representing the selected areas in the scatter plots. In this case we can see clouds class raster (blue), forest class raster (green) and water class raster (red). slay 🌈

⭐ NOTES ⭐

heads up bestie, this tool can analyze only integer (CELL) rasters 💀

It works with 8 bit range smoothly ✨. The tool is capable of processing data up to 12 bit range, however it is not recommended to open many scatter plots in 12/11 bit mode — it could require a significant amount of memory and plot rendering time can be longer 😭. Analyzing raster data with a higher range is not recommended. The raster range can be lowered using r.rescale 🫶.

🙈 KNOWN ISSUES 🙈

Selection of areas in the map window is currently supported only if the tool was launched from the Supervised Classification Tool. periodt 💅

🌈 SEE ALSO 🌈

wxGUI, wxGUI components, r.rescale

See also the user wiki page.

👑 AUTHOR 👑

Stepan Turek, Google Summer of Code 2013 (mentor: Martin Landa) 🫶

💾 SOURCE CODE 💾

Available at: wxGUI Interactive Scatter Plot Tool source code (history)

Accessed: Friday Nov 21 14:02:57 2025

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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.2 Reference Manual

ok that's the whole page bestie, ily, go plot some scatter plots 💖✨🌸 and remember: this was GRASS 8.4.2, the wxGUI.iscatt(1) page, accessed Friday Nov 21 14:02:57 2025 — stay iconic, mwah 💅🎀🦋

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