Abstract
In the paper, we review selected existing solutions of raster map calculators and propose a new approach for map calculation tools. The main criteria to select raster maps calculators was the ability to run them in batch mode and to use them in external scripts. Such a working method is common in the processing and modeling of massive datasets. We compared the following solutions: r.mapcalc from GRASS GIS, Grid Calculator module in SAGA, gdal_calc.py from GDAL library, and ’calc’ function from R raster package. Moreover, we propose another solution — plMapcalc. The solution has new features, such as multiple outputs, multi-pass processing, and a memory buffer to store temporary values. All raster calculators were compared according to their processing efficiency and precision. Two datasets of different sizes were used in the testing procedure, which started with GeoTIFF input files and produced GeoTIFF resultant files.The results of the test show that the precision of the calculations is comparable. We also compared the processing times of all the calculators using a ranking procedure. The new solution for introducing extra functionalities is the best ranked raster map calculator.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
