Esri ASCII Grid File Format Plug-ins for ImageJ
Download plug-ins for reading and writing Esri ASCII grid files with ImageJ.
To install, unzip the file and place the two Java files in the ImageJ plugins folder. Restart ImageJ and select Plugins > Compile and Run the first time you are using the plugins. Select ESRIASCIIGrid_Reader.java to compile and execute the plug-in for reading files. Select ESRIASCIIGrid_Writer.java to compile and execute the plug-in for writing files. After compilation the plug-ins can be called directly from the Plugins menu.
When reading Esri ASCI grid files with these plug-ins, a 32-bit floating point image is generated. For export, images need to be of this same type. To convert to this format, use Image > Type > 32-bit.
This Java source code is freely available and in the public domain. No license is required.