![]() If you wish the tool to use fewer cores, use the parallelProcessingFactor environment setting. The maximum number of cores that can be utilized is limited to 4. If the field is not exposed as a variable, the classify and unique values buttons will be disabled in the model tool dialog box.Īdvantage of multi-core processors. If exposing the reclassification table as a model parameter, the reclass field must be exposed as a variable however, it does not need to be set as a model parameter.Alternatively, you can create a custom reclassification table by adding entries. To avoid this, always run preceding tools before connecting their output variables as input to the Reclassify tool. If the input to the tool is derived data from a tool that isn't already run, the remap parameter in the Reclassify tool will be empty until the preceding tool is run and the model is validated. ![]() When using the Reclassify tool as part of a model: This tool has a precision control that manages how decimal places are treated. Select the unique or classification options to generate a new reclassification.Select and delete the remap entries and manually add the new values.Edit or select a field for the reclass field to invoke a new default reclassification.If the reclassification is not suitable for the new raster, a new reclassification can be reinitialized by: Once the remap table of the reclassification has been modified, the table will not be updated if a new input raster is selected. When the input raster is a layer from the Table of Contents, the default reclassification table will import the unique values or classified break values as specified by the layer symbology otherwise, the reclassification table will default to natural breaks with nine classes. The table format is specific and must contain the fields FROM, TO, OUT, and MAPPING. It is recommended to only load tables previously saved by the Reclassify tool. Use the Load option to reload remap tables you created previously with the Save button. ![]() Where overlapping occurs, the higher end of the lower input range is inclusive, and the lower end of the higher input range is exclusive.įor example, if two ranges are specified, such as reclassifying values 1 to 5 as 100 and values 5 to 10 as 200, an input value less than or equal to 5 will be assigned the value 100 in the output, and an input value that is larger than 5, such as 5.01, will be assigned to 200.įrom the tool, the remap table can be saved as an INFO table for future use with the Save option. If a range of values is to be reclassed, the ranges should not overlap except at the boundary of two input ranges. Not exist, they can be created using the Calculate Statistics tool in the Data Management Tools toolbox. The input raster must have valid statistics. Including a shapefile in Omniscope significantly bumps up the size of the total Omniscope iok file and affects the loading time and the amount of RAM your machine will also determine what loads.Reclassifies (or changes) the values in a raster. Unfortunately there is only so much you can generalise/simplify, every iteration of this will erode the quality and accuracy of your boundaries so you have to make the call on how much you want it to simplify to and just do it by trial and error. Other options would be to use programming/scripting like in R or Python to do the same generalisation with their own specific libraries but I find the GIS packages will be far quicker to process them. Just google how to use each package for tutorials/videos on GIS users who use them. model builder with spatial analyst for ArcGIS or install plugins for GrassGIS/QGIS like generalizer/simplify. kmls as they appear to be the leanest option.Ģ) Generalise/clip the shapefiles to reduce the load time (also reduces accuracy), load up the shapefile in you GIS package, find the generalisation options either inbuilt in some packages i.e. Also every year ArcGIS provides a couple of online MOOCs where you can get some extra help regarding their products.ġ) Convert OSGB shapefiles into WGS version shapefile/kml - import/load up your shapefile into your GIS package of choice and set the current projection to OSGB, then go into the save as/export options and change the resulting output into WGS projection. The ArcGIS API will have some of those boundaries that can be accessed with a free public account you just have to sign up for a trial to get some login information for the software. Edina for admin/political/nhs boundaries: Ordnance Survey Open Data BoundaryLine administrative low level (high quality): Currently most of these resources take a bit of time to load up in the Omniscope map view due to their size and granularity. ![]() Posting for reference and also to look at perhaps getting Omniscope to be more efficient and able to handle the sources directly.
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