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Creating fishnet using a template

JasmineSpring

Hello

I need some help to work out how to configure create fishnet using a template specified in the parameter of a script tool to create a 2m grid. Im not sure how to get the x and Y values from the template. Thank you for your help its very apprecaited

Output1 = arcpy.GetParameterAsText(0)
Input1 = arcpy.GetParameterAsText(1)

arcpy.management.CreateFishnet(Output1,"","" , '2', '2',None,None,"", "NO_LABELS", Input 1, "POLYGON")

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Accepted answers

JasmineSpring

This is the solution I used in the end

desc = arcpy.Describe(Templatelayer)
arcpy.CreateFishnet_management(Grid_layer,str(desc.extent.lowerLeft),str(desc.extent.XMin) + " " + str(desc.extent.YMax),"2","2",None,None,str(desc.extent.upperRight),"NO_LABELS","#","POLYGON")

. Thank you for your help

All comments

NickAtEsriAU

Hi @JasmineSpring ,

Sorry I am very late to this and know its solved but a similar solution from me. I am only interested in making 2 rows and 4 columns but here is the code for what it is worth.

import arcpy
import os

wksp = r"Insert workspace here"
in_md = "Insert name of input dataset"
out_fc = "Insert name output feature class"

arcpy.env.workspace = wksp

# Create a fishnet grid
desc = arcpy.Describe(in_md)
xmin = desc.extent.XMin
xmax = desc.extent.XMax
ymin = desc.extent.YMin
ymax = desc.extent.YMax

point_origin = f'{xmin} {ymin}'
point_yaxis = f'{xmin} {ymax}'

arcpy.CreateFishnet_management(out_feature_class=out_fc,
                               origin_coord=point_origin,
                               y_axis_coord=point_yaxis,
                               number_rows="2",
                               number_columns="4",
                               labels="NO_LABELS",
                               template=in_md,
                               geometry_type="POLYGON")

Cheers,

Nick

JasmineSpring

This is the solution I used in the end

desc = arcpy.Describe(Templatelayer)
arcpy.CreateFishnet_management(Grid_layer,str(desc.extent.lowerLeft),str(desc.extent.XMin) + " " + str(desc.extent.YMax),"2","2",None,None,str(desc.extent.upperRight),"NO_LABELS","#","POLYGON")

. Thank you for your help

danretired

It looks like you have to get the origin from the template featureclass then

JasmineSpring

The size is ok because it is always 2m. It is using the template (another layer) set as a parameter that is the issue when its scripted in python. I get the following error.

thank you so much!

danretired

why not add another parameter and set its default value

size - arcpy.GetParameterAsText(2)

arcpy.management.CreateFishnet(Output1,"","" , size, size,None,None,"", "NO_LABELS", Input 1, "POLYGON")

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