• Does it usually take extremely long time to execute geoprocessing functions when working with big files?

    Hi,   I have been working with a DEM of size 35GB geotiff file of a watershed and have been experiencing extremely long processing times to execute different geoprocessing tools such as flow direction, accumulat...
    last modified by mi931610
  • Why am I getting null values for area and volume in my storage capacity output table?

    I'm using the spatial analyst supplemental tools and I'm running the storage capacity tool using a DEM raster and a feature class that I've been working with for months now. I've been using the storage capacity tool e...
    last modified by ben.shuski
  • Focal statistics coordinate shift

    In focal statistics, if the size of the neighbourhood is larger than a specific limit (for example 2 for circular radius), the output raster is shifted by the size of the neighbourhood... Seems like a bug, or is there...
    last modified by jotorppa
  • Interpolating FROM points TO points (i.e. not to a new raster)?

    Imagine I have two sets of XY points, lets call them A and B, roughly coincident in space. Points A also have an attribute, lets call it N. I’d like to estimate (i.e. interpolate) the same attribute N for points...
    last modified by SpatialProf
  • Hi all,I am using IDW to interpolate my data points in ArcGIS ,the default number of points in the search radius is 12.Is there a way to determine the number of points to use based on the available sample points?Assumming I have 50 sample points.Thanks

    Spatial interpolation using IDW 
    last modified by bibiannjiru447
  • Iterator not working

    Hello,   I am currently attempting a Least Cost Path analysis, specifically, a "From everywhere to everywhere model".   Cost raster = Slope_Raster Surface raster = 0 value extracted_DEM Vertical Factor: ...
    last modified by Curtis_Lisle_LearnArcGIS
  • Interpolation runs infinitely - never returns results

    Attempting Spatial Analysis methods but the processing never stops, never returns results.  Tried point density, IDW, kriging, others.  Same results.  Tried various maps.  Opened new map.  Sam...
    last modified by mindbus2806
  • How do I derive slope from a very large DEM?

    Hi there,    I'm trying to calculate slope based from a national DEM - USGS 3D Elevation Program (3DEP), found here: 3DEPElevation (ImageServer)  - and am having trouble with the spatial anal...
    last modified by sptacek_NRDCINC7
  • The goal is to join point data to lines.

    The goal is to join point data to lines. I have 305 points and 1023 lines. The points are Crime Incidents, the lines are street lengths. The goal is to determine which street segments are the reported locations of the...
    last modified by BFosberg
  • Join Lines

    I have two sets of line or the same data as polygons, some long and a few shorts, I want a single output that combines add the shorts to the longs. Shorts can only be combined once, Longs may have many shorts connect...
    created by BFosberg
  • How to use a mask layer during Natural Neighbor Interpolation?

    Is there a work around that will allow the use of the Natural Neighbor interpolation method within a boundary or mask layer?
    last modified by jirons12
  • How to categorize a raster based on pixel count within a moving kernel?

    I have a classified raster with four land cover classes - built-up, vegetation, water and barren land. Now, I want to categorize the built-up areas into three more classes - high built-up density, medium built-densit...
    last modified by nil221292
  • ArcGIS Desktop. Surface Volume VS Cut Fill

    Hi  Does anybody know how Surface Volume is differ from Cut Fill? Thanks
    last modified by dameli@asu.edu
  • Problem with tabulate area

    I have a problem with Tabulate area tool.  All the area of the grid is assigned to on landuse class although the grid has multiple classes in it. all the data (grids and land use) have the same projection. tabu...
    last modified by buonewton808
  • Sink results in very different demarkations?

    Sink results in very different demarkations depending on the resampling of the raster data. Could someone explain why? I don't understand this? In the attached images you could see the differences. I use elevation da...
    last modified by JB1234510
  • How does the Rescale by Function tool work?

    I am trying to fit all of my pixel values on my raster in between 0 and 255. Currently, they range from 0 to 65535. I wanted to use the Rescale by Function tool with the TfLinear to scale it, but when I put the output...
    last modified by KPerri-esristaff
  • Create new weighted raster from DEM and polygons

    I am attempting to create a new, weighted raster from the combination of a regional DEM and a polygon shapefile.  I've attached an image - the DEM is the background - the red/yellow region -- and the black p...
    last modified by dbh10
  • Generalize a Slope Surface

    My adventure into creating and visualizing slope surfaces has moved into a third and possibly final chapter.  See Using arcpy to create slope surfaces  and Display A Slope Raster for chapters ...
    last modified by jborgion
  • Raster calculator

    Dear GIS experts. I can't get my raster calculator expression to run. I have two different raster datasets: - wnb_near - svo_near I want to create a new raster. When the value of svo_near ist smaller than the va...
    last modified by imhofbesri
  • Training samples (identifying based on orthophoto)

    Hi guys, I wanted to identify "private plots, gardens" (like in picture) based on orthophoto.   I thought about training samples, but it results wrong of course, because of the all the colors which were included...
    created by Piskota