imldresden/HeatMapNode

HeatMapNode

This project is a libavg plugin. HeatMapNode is derived from RasterNode and can render a Heatmap based on single Points or a whole matrix. We have tested it under Linux and Mac. Also, there are no OS-specific features that we know of, so it should not be hard to get to run under windows.

HeatMapNode was originally written by Lucas Recknagel. Thanks!

Install Instructions

Dependencies:

• cmake

Build & Install:

cd HeatMapNode/plugin
mkdir build && cd build
cmake ..
make -j9
make install # run as sudo if you´re not using virtualenv
cd ../..
python setup.py install # run as sudo if you´re not using virtualenv

Usage

You can use the pythonwrapper class or the plugin directly.

Wrapper

from HeatMapNode import HeatMapNode
...

heatmap_node = HeatMapNode(
    id="test",
    size=self.size,
    parent=self,
    colormap=cm,
    valuerangemin=1,
    valuerangemax=16,
    overlay_src="world.png"
    blur_level=1
)

Your can set those attributes on you needs and then call:

heatmap_node.set_data(data)

The data attribute must be a single avg.Point2D or a list of lists (2D Array or Matrix like) You find a example in heatmapnode_test.py.

Directly

player.loadPlugin('heatmap')
...
heatmap_node = heatmap.HeatMapNode(
    parent=parent,
    size=size,
    viewportrangemin=(0,0),
    viewportrangemax=(1,1),
    mapsize=(10,10),
    valuerangemin=valuerangemin,
    valuerangemax=valuerangemax,
    colormap=colormap
)

You can then call:

heatmap_node.setMatrix(data)
OR
heatmap_node.setPosns(data)

If you are using the plugin directly, blurring does not work out of the box!