Fishnet nor following input layer outline/boundary

TonyAlmeida — Fri, 19 Jan 2024 23:48:03 GMT

I am trying to create a fishnet that is created orientated or built incorrectly. Why does the create fishnet do this?

I have the following code, but I am not sure why it's not creating it with the boundary of the input layer.

import arcpy # Set the workspace (replace with the path to your data) arcpy.env.workspace = r"C:\temp\Test.gdb" # Input county PLSS grid feature class county_plss_grid = r"C:\temp\Test.gdb\SEC_231N3W" # Output grid feature class output_grid = "SEC_231N3W_Grid_New2" # Specify the coordinate system (NAD 1983 HARN StatePlane Oregon North FIPS 3601) coordinate_system = arcpy.SpatialReference("NAD 1983 HARN StatePlane Oregon North FIPS 3601 (US Feet)") # Get the extent of the county PLSS grid extent = arcpy.Describe(county_plss_grid).extent # Calculate the overall length and width of the input layer length = extent.width width = extent.height # Determine the cell size based on the overall length and width cell_size = min(length, width) / 10 # You can adjust the denominator for the desired number of cells # Set the number of rows and columns num_rows = 10 num_columns = 10 # Set the output coordinate system arcpy.env.outputCoordinateSystem = coordinate_system # Create a fishnet with 10 rows and 10 columns using the input layer width and height fishnet_path = arcpy.management.CreateFishnet( out_feature_class=output_grid, origin_coord=f"{extent.XMin} {extent.YMin}", y_axis_coord=f"{extent.XMin} {extent.YMin + cell_size}", # Move south to north cell_width=cell_size, cell_height=cell_size, number_rows=num_rows, number_columns=num_columns, labels="NO_LABELS", geometry_type="POLYGON", template=county_plss_grid # Use the original shape as a template )[0] print(f"Fishnet created: {output_grid}")

Re: Fishnet nor following input layer outline/boundary

DanPatterson — Sat, 20 Jan 2024 02:11:17 GMT

What do you get if you let the tool calculate the cell size, keeping the LL and UR coordinates the same and the same number of rows and columns?

Create Fishnet (Data Management)—ArcGIS Pro | Documentation

Re: Fishnet nor following input layer outline/boundary

TonyAlmeida — Tue, 23 Jan 2024 23:53:33 GMT

It appears that the fishnet shifted, there is now a gap at the bottom right corner. This time I ran it in the tool, see attached. I mad sure the coordinate system and the extent were the same as the input, as well as the maps coordinate system.

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Fishnet nor following input layer outline/boundary

Re: Fishnet nor following input layer outline/boundary

Re: Fishnet nor following input layer outline/boundary