Latest Contributions by natashaGregory-Michelman

‎04-27-2017

Where do I enable the spatial analyst extension in ArcGIS Pro?

‎07-13-2016

I looked at the histogram and there was none there. When I calculated the histogram using the resampled pixels option the correct range of elevation came up. Thankyou! I'm making my way through using this elevation data and las data and am new to things so I'm grateful.

‎07-13-2016

I have 6 dem files that I would like to be able to combine and then use with las file to create an ndsm. I have tried to create a mosaic and my output reveals the boundary and the footprint of the input rasters but there is no content within the boundary. The elevation data is not there. Am I missing something? I have entered workspace and added the folder and used the sub-folder option. It looks correct except for the data. Thankyou for any help. Natasha

‎05-27-2016

I did apply the min-max stretch setting and that allows for editing the low - high values but I still don't see how that shows elevation information. Is the Stretched value the elevation data when revealed in the Identify Window? Thankyou

‎05-27-2016

I have created an nDSM layer and I want to use the height of features to display in the Table of Contents. In the Symbology tab I choose the Stretched property and it shows the Value range as between 277.788 and -5. I'm a bit confused as to what this information represents; I think it's the Pixel value. When I use the identify tool I see that there are Height values indicated for each pixel but I don't know how to get that to show up. I'm seeing the same thing occur with the DEM. The datasets were created from an LAS data work flow so perhaps I missed a step or a setting in the workflow? If anyone has any thoughts I'd appreciate it greatly. ~Natasha

‎05-25-2016

Abdullah this was the solution. I very much appreciate you help. ~Natasha

‎05-25-2016

I am trying to locate a specific coordinate within the US National Grid displayed over an NDVI raster. 18TXL5220060030 and 18TXL5157160811 as an example. I have specified the subdivision ticks to be 10 so I can see 52200 precisely and I can see 60 and can estimate that 30 would be a bit before 61 but I'm just eyeing this information and I'm thinking there must be a more precise method to locate specific coordinates within this mapping software. I'm drawing a line from the tick marks estimated locations to find the intersection but this seems to be a very rudimentary way of doing things. I'm running 10.4 Thankyou for any help. ~Natasha

‎12-07-2015

I'm working on the convolution of the if elif statements. I see now what you're saying

‎12-07-2015

Dan you are correct that I was not looking properly into whether the original shapefile was correctly noted in the attribute table but I think the main thing was that I was incorrectly using quotation's around the variables that were to update the table within the updateCursor. I manually corrected the original file and was able to execute the script with your direction. I'm hoping to be able to do this with python in the future. Thankyou so much. I really mean it.

‎12-07-2015

I am still very new at Python scripting within ArcGIS and I have a script that clips a shapefile to a new AOI, then writes a field to it and updates it with an Update Cursor. I have been successful in using the script up until the CopyFeatures_management part. The script returns a code 0 and has added the new field and has created the correct named shapefile but the file is empty. Any help would be welcome. import arcpy # set local variables arcpy.env.workspace = "C:/Final Project/GIS" arcpy.env.overwriteOutput = True fc = "settlement_dd.shp" clip_fc = "AOI.shp" out_fc = "Settlement.shp" xy_t = "" fields = ["Name", "Type", "Model"] # set attribute table and new fc variables toModel = "YES" notModel = "No" modelFC = "Model" try: # clip point features arcpy.Clip_analysis(fc, clip_fc, out_fc, xy_t) # add a field called "Model" to the fc arcpy.AddField_management(out_fc, "Model", "Text") except: arcpy.AddError("Could not Complete Clip and AddField") try: # create updateCursor and go through rows making the changes to the "Name" field first with arcpy.da.UpdateCursor(out_fc,(fields)) as cursor: for row in cursor: # update "Name" field with Boma, Building, or TBD if row[1] == "Huts 1-2" or row[1] == "Huts 3-5" or row[1] == "Livestock Enclosure": row[0] = "Boma" elif row[1] == "Buildings 1-2" or row[1] == "Buildings 3-5": row [0] = "Buildings" elif row[1] == "Settlement": row[0] = "TBD" # update "Model" field with Yes or NO if row[0] == "Boma" or row[0] == "TBD": row[2] = "notModel" elif row[0] == "Buildings": row[2] = "toModel" cursor.updateRow(row) except: arcpy.AddError("Could not update rows") try: # make feature layer from points pointsQuery = ' "Model" = ' + "'" + toModel + " ' " arcpy.MakeFeatureLayer_management(out_fc, "settlement_lyr", pointsQuery) arcpy.CopyFeatures_management("settlement_lyr", pointsQuery, modelFC + ".shp") except: arcpy.AddError("Copy Features Unsuccessful") finally: arcpy.Delete_management("settlement_lyr") The correct (albeit empty) layer is indicated in the attached .jpg

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Date Last Visited	‎11-11-2020 02:24 AM

My Ideas

Latest Contributions by natashaGregory-Michelman

Spatial Analyst Extension in ArcGIS Pro

Re: Raster Mosaic Does Not Show Elevation Data

Raster Mosaic Does Not Show Elevation Data

Re: Display nDSM Layer with Height Attribute Information

Display nDSM Layer with Height Attribute Information

Re: Locate Pixel at Specific Coordinate in US National Grid

Locate Pixel at Specific Coordinate in US National Grid

Re: CopyFeatures_management from a Python script returns empty layer

Re: CopyFeatures_management from a Python script returns empty layer

CopyFeatures_management from a Python script returns empty layer