ARIS APS Reader (OPS output) for ArcGIS

The APS Reader adds native support (direct read) for APS rasters (output from the OPS model like .aps, .plt, .grd) to ArcMap and ArcCatalog, automatically stretching between MIN and MAX values in the raster.

The National Institute for Public Health and the Environment (RIVM) and the Netherlands Environmental Assessment Agency (PBL) own the OPS model and provide it for calculations to other organisations, especially in the Netherlands. The output of the OPS model is a specific ASCII grid with multiple grids in one file: APS Grid.

ARIS has a solution to use APS rasters directly in ArcMap and ArcCatalog. All the usual raster operations in ArcMap (for example the Spatial Analyst tools in ArcToolbox) can be applied to the APS raster.


APS Reader: Direct read in ArcMap


The APS Reader supports the following APS features:

  • Non-square cells
  • Multiple rasters in one file
  • Projections stored in the APS file
  • Cell values for integer rasters are represented as 32-bit Integer values, floating-point rasters as 32-bit Single values.

The APS Reader calculates automatically MIN and MAX values (statistics) in order to display the grid by default in graytones in the applicable range.


New version
The latest version for ArcMap 10 is compatible with ArcGIS 10.4.1


APS Reader attributes in ArcCatalog



The APS Reader recognizes the following file extensions:

  • .aps
  • .plt
  • .grd


Required is one of the following ArcGIS 10.0, ArcGIS 10.1, ArcGIS 10.2 / 10.2.1 / 10.2.2, ArcGIS 10.3 / 10.3.1 or ArcGIS 10.4 / 10.4.1 licenses:

  • ArcView / ArcGIS Desktop Basic
  • ArcEditor / ArcGIS Desktop Standard
  • ArcInfo / ArcGIS Desktop Advanced

The Spatial Analyst extension is not required.


Use the Contact Form to request new features or suggest modifications to existing tools.
Please contact us if you have any other questions about the ARIS APS Grid Reader.


Interested? You can download an almost fully functional version, with 5-day trial license for a specific ArcGIS version by clicking on the "Download setup" link or view the User's Manual in the table below.

If you decide to purchase this product, a key will be sent to you by email. This key will enable you to unlock the permanent version. Use buttons below for the latest version.


Available versions:

2.x ArcGIS 10.6/10.7 Request
2.5.0 ArcGIS 10.5/10.5.1 Request
2.4.0 ArcGIS 10.4/10.4.1 Manual Download setup Buy
2.3.1 ArcGIS 10.3/10.3.1 Manual Download setup Buy
2.2.1 ArcGIS 10.1/10.2/10.2.x Manual Download setup Buy
2.0.3 ArcGIS 10.0 Manual Download setup Buy
1.0 ArcGIS 9.x Contact us Request