jackaiwang / gheat-java

Port of GHEAT in Java

GHEAT JAVA [JAVA HEAT MAPS]

The MIT License

Copyright (c) 2014 Varun Pant

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

This is a Java port of gHeat

• This port was primarily inspired by GHeat-NET
• This is fast and a free heat mapping tool.

Source can be compiled using maven and there is a jetty web application included as well.

To run start App.java in heatmaps module and then open test.html

The application can use FileDataSource,or an in memory Quadtree datasource which needs a csv file with weight,latitude and longitude in it or a Postgis data source .

For Postgis data

Change the query to work with custom data ,notice the required aliases( latitude,longitude,geom and weight ).

SELECT ST_X(geom) as longitude,ST_Y(geom) as latitude, weight as weight from mySpatialTable where geom @ ST_MakeEnvelope(?,?,?,?,4326)" or change the source of gheat module for a better and more elegant solution

To run from command line,one can issue mvn clean install from JavaHeatMaps folder.

Then in App.java file,provide full path to res folder,eg:(ThemeManager.init("/full/path/to/res/folder")) and then type java -jar heatmaps-1.0.jar

Open test.html to see the heatmaps overlayed ;).

Here are some screen shots

I hope you find it useful.

If you like or use this project somewhere please contact me at [email protected] http://varunpant.com Read more about it here