All Questions
3,508 questions with no upvoted or accepted answers
11
votes
0
answers
1k
views
What is the convergence threshold for ArcGIS Iso Cluster?
The ArcGIS tool Iso Cluster Unsupervised Classification does not seem to have any documentation on the convergence threshold used in the tool. To compare, Erdas Imagine has all of the necessary ...
- 51.8k
6
votes
0
answers
78
views
Adding raster value with specific equation using ArcMap
I am trying to develop a raster layer with the interference of streetlight in this example:
As you can see, there are multiple buffer rings around a point layer. I actually want to transform this ...
- 73
6
votes
1
answer
325
views
ArcGIS project raster produces incorrect vertical coordinates
I have a DEM in UTM (meters) / NAVD88 (meters) and need to transform it to State Plane (feet) / NAVD88 (feet). Unfortunately, I do not have the raster calculator in ArcGIS, so I have to use Project ...
5
votes
0
answers
47
views
Wrangling precision in QGIS with a hypothetical planet
I'm a tabletop roleplaying gamemaster wanting to use QGIS to help organize my notes according to place. GIS addresses my need to store notes and other data that may be anywhere from a few feet from ...
- 151
5
votes
1
answer
291
views
Retaining subsecond time precision in date/time field in Geodatabase
I have a set of points (essentially tracks) with subsecond time precision, that would be useful to visualise/analyse. I have tried the "Convert Time Field" tool from string, float and double field ...
- 59
5
votes
0
answers
80
views
Same LiDAR data but different results in ArcMap and eCognition
I have generated raster layers based on LiDAR Number of Returns in both ArcMap and eCognition but the results are quite different.
I ArcMap I used LAS point to Statistics to Raster Tool, in the ...
- 197
5
votes
1
answer
1k
views
Preconditions not working on second iteration of ModelBuilder?
I'm working on a project where I have to iterate through geodatabases and handle some debug errors if they exist. For this I've created a ModelBuilder model, in ArcGIS 10.7.
Essentially, what the ...
- 51
5
votes
2
answers
110
views
Creating pseudo-heatmap based on time spent in AOI using ArcGIS Desktop
I wanted to see if there was a way to create a heatmap based on time spent in a certain AOI. What I mean by this is a layer you can toggle on/off that would go from clear to red as you spend more ...
- 69
5
votes
0
answers
691
views
Local grids with rotated north in QGIS
Like many people in geology and archaeology I need to work with local grids that have eastings and northings from a specific reference point, and typically have a difference alignment/direction of ...
- 51
5
votes
0
answers
287
views
Creating individual routes from home to multiple destinations in ArcMap ModelBuilder with ArcGIS Network Analyst
I am trying to create individual routes from Homes to multiple Destinations. The unique ID is respondent in both the Homes and Destinations tables. I've created an iterative model in ModelBuilder ...
- 51
5
votes
0
answers
220
views
Check for mxd write access with python addin
I'm looking for a way to check for writing access to an mxd upon the initiation of a python AddIn tool. My tool should only be enabled if the user has writing access to the mxd. I thought there was a ...
- 13.9k
5
votes
1
answer
3k
views
Relating tables in ModelBuilder of ArcMap
I am an intermediate user of ArcMap (version 10x), and the process that I do manually is:
I relate the table of a feature class (representing parcels, cadastral division of a city) to another table ...
4
votes
0
answers
220
views
Classifying range of symbology classes
I want to create several dozen maps where all have a field with a range from 0 to 100.
I need to classify these into symbology classes every 15 and make a legend out of this.
However, the map I am ...
- 304
4
votes
1
answer
142
views
Collector App Offline Syncing issue
We are using the Collector for ArcGIS app for numerous inspections. I've been tasked to manage the GIS portion of it.
Some locations lack data service so the inspectors are using the offline mode. ...
- 41
4
votes
1
answer
323
views
Stop Grid Coordinates Overlapping in Print Layout
I have created some data driven pages in the print layout (controlled by atlas) using QGIS 3.4. The grid spacing is set to a fixed interval (20m). This works fine until one of the pages is located in ...
- 51
4
votes
1
answer
309
views
Capturing ArcMap Drawing Errors inside of Python script
Is there any way to capture ArcMap Drawing Errors inside of a Python script?
Through Python, I would like to iterate through each layer inside of an MXD, make the layer visible, refresh the table of ...
- 41
4
votes
1
answer
1k
views
How to "mosaic" rasters and keep attributes
I have numerous individual 10m Raster files (with both quantitative and qualitative data) for each state and need to combine them into a national dataset.
However, when using a mosaic it seems that ...
4
votes
0
answers
233
views
Measuring distance between discharge point, along river, until next intersection with another river?
i hope someone can answer me my simple question. I have two sets of data
a river network --> line feature
discharge points along those rivers --> Point Data
The discharge points represent wastewater ...
4
votes
1
answer
384
views
Is r.cost equivalent to diffusion interpolation with barriers?
I want to perform interpolation using cost distances rather than euclidean distances similar to Greenberg et al. (2011). In that paper they use r.cost in GRASS to compute cost distances for each ...
- 49
3
votes
0
answers
23
views
ArcGIS Pro editing tool divide only allows for 50 graduations of a line segment?
I have an 2,047 foot line in a WaSPN(ft) CRS. I want to divide this line into 30 foot segments. I am trying to use the Divide option in the Modify Features Tools pane. The tool only allows for no ...
- 10.5k
3
votes
0
answers
36
views
Setting valid input types in Python Toolbox
When adding a python script tool to ArcToolbox, you can specify valid input types using the dropdown "Data Types" on the parameters tab in the tool properties.
In Python Toolboxes you can ...
- 29.9k
3
votes
0
answers
66
views
Population clustering from Raster using ArcMap
I have a raster image with different pixel values, each one representing the number of people living in the pixel. I want to cluster the pixels based on the sum of the pixel values equaling 1000 in ...
3
votes
0
answers
36
views
Looking at exporting multiple shapefiles with corresponding input names
I am using ArcMap 10.6 and ModelBuilder.
I have input points (LinepointS1) from a geometric network which contain sub 3000 points that I would like to trace downstream from and have the model spit out ...
- 31
3
votes
0
answers
67
views
Using the "System" database on Postgis -> ArcGIS
I've been evaluating ArcGIS at work as a possible sollution to working with some .kmv files coming from a supplier that seems to be incompatible with QGIS. QGIS thinks they are corrupt, I suspect due ...
- 132
3
votes
0
answers
71
views
QGIS grid doesn't fit
I downloaded the German 1km grid and also create a 100m grid with the same EPSG code
EPSG:25832 - ETRS89 / UTM zone 32N
but the created grid doesnt have the same coordinates. Why did this happen?
...
- 131
3
votes
1
answer
162
views
Automate Name-Based Merge
I'm struggling trying to use Model Builder's iterator tool. I'm trying to use the iterator to search through 6 geodatabases and merge each feature classes with the same name (BuildP, CisternA etc.) ...
- 31
3
votes
0
answers
902
views
What syntax is used for "Custom Parameters" in ArcGIS Pro
I have published to ArcGIS Portal a Map Image Layer containing 3 layers. Each layer contains some overhead and underground (UG) assets. Usually, I would just make a definition query to only select the ...
- 512
3
votes
0
answers
736
views
Identifying Source Date for Visible ESRI World Imagery in ArcMap
Using ArcMap 10.2.2 I want to identify the source data of the Esri Satellite Basemap 'World Imagery'.
When using the identify tool you can select which layer of the World Imagery you want to identify -...
- 51
3
votes
0
answers
331
views
Selecting lines between two points using ArcMap
I have two layers: One representing intersections in a city; and the other representing the road network. As shown below, I'd like the ability to select road segments provided two intersections. That ...
- 31
3
votes
0
answers
1k
views
What is function of .horizon files in file geodatabase?
What is the function of the .horizon files that are present whenever a file geodatabase is created in ArcMap, I understand it is all proprietary formats for Esri, but is there any explanation?
I have ...
- 31
3
votes
1
answer
7k
views
Adding easting and northing points in ArcGIS
I am trying to add coordinates into ArcGIS 10.6.1. Below are the Northing and Easting I have been given.
I have added these Northing and Eastings into an Excel sheet and saved them as a CSV File (The ...
- 825
3
votes
1
answer
235
views
Why is the calculated area different in the layer that was clipped with a mask
I have a mask that I created. I used calculate geometry in the attribute table to calculate the acres of the polygon (1,214,784 acres). I then used the intersect tool with the mask and another layer ...
- 81
3
votes
1
answer
1k
views
Vertical datum conversion in ArcGIS Pro not recognizing vertical coordinate system
I have a GeoTiff surface model and the z values reference EGM96. I would like to use the vertical datum conversion capabilities in ArcGIS Pro 2.7 to convert the GeoTiff to reference the NAVD88 ...
- 10.5k
3
votes
0
answers
48
views
Breaking up existing watershed polygons by flow to individual tributaries
I have an existing hydroshed dataset (HydroBASIN lev12 basins from the HydroSHED dataset) that I would like to split up further, so that each tributary has its own basin delineated (see below).
I ...
- 31
3
votes
0
answers
53
views
Raster to ASCII tool in ArcMap returning different max and min values
I am using Raster to ASCII conversion tool in ArcMap 10.7.1, and the issue is reproducible in 10.6.1, and 10.8.1.
I have two raster files in TIFF format.
When I used the tool for one raster the output ...
- 2,740
3
votes
2
answers
448
views
Routing with set of points and barriers individually using ArcGIS Network Analyst
I need to run network analysis routing (to calculate distance) on pairs of points with barriers. I have 3 feature classes:
Origins
Destinations
Barriers
All 3 of which share a common unique ID ...
- 1,956
3
votes
3
answers
2k
views
"Zonal statistics" for two polygon layers using ArcMap
I have 2 polygon layers:
one is a vector grid with attribute values for each "polygon cell"
the other including administrative boundaries
I would like to calculate the mean value of all ...
- 883
3
votes
1
answer
268
views
When generating WMS service in ArcGIS random numbers are added to the layer name
I have an mxd file. Each time I share/publish a WMS service to the ArcGIS server as WMS, random numbers are added to the layer name. For example here is added number 8950 at the end of the <Name>...
- 51
3
votes
0
answers
118
views
ArcGIS Pro SDK forcing process windows to be minimized?
I'm running a Process from my add-in, and even if I use P/Invoke to force the window to be open and in the foreground, the process windows that appear will be minimized. Weirdly enough, they are ...
- 31
3
votes
0
answers
161
views
How to stop ArcGIS Pro report from inserting cover page?
I have a simple report I've designed in ArcGIS Pro that outputs a handful of fields in a table for each selected feature in a point layer (see image below). Everything works as expected with the table ...
- 3,112
3
votes
3
answers
312
views
How to make the display of a satellite image the same across users?
I have a group of users counting objects in a satellite image. To keep viewing conditions the same I wish each user to have the same display (e.g., the same scale).
To do this, I have asked users to ...
- 31
3
votes
1
answer
271
views
Issue with editing a feature class within ArcGIS
I have tried editing a feature class in an ArcGIS drawing which results to an error related to the specific geodatabase. The description in the error says "Check to see that you have the appropriate ...
- 39
3
votes
0
answers
116
views
Proj4 string missing datum information for SAGA outputs loaded into R
I've produced a set of topographic derivatives using both SAGA and ArcGIS. They are all in the same CRS.
When I load them into R, however, the proj4 strings are different:
>arcRaster
class ...
- 1,623
3
votes
2
answers
1k
views
Graticule will not display in layout view
Problem:
I am trying to create a graticule for a map in ArcMap 10.7.1. When I create the graticule and hit "apply", the graticule does not display in layout view or when I export the map.
Steps to ...
- 235
3
votes
0
answers
1k
views
Duplicate Global IDs within same feature class
I received a geodatabase from a contractor and I observed there are multiple feature classes with column of Global ID type.
These Global ID type columns, when I checked data i realized there are ...
- 1,108
3
votes
0
answers
162
views
Recreate a Local Custom Coordinate System from Survey Data in GIS?
I have a .DWG file of a series of survey points that has no associated projection file with it. The surveying group I received the data from states that the system they use is a local coordinate ...
- 633
3
votes
0
answers
109
views
Using Spatial Join/Merge/Table View in ModelBuilder
I have developed a model that spatially joins a series of line segments to line and point segments using the "One to One", "Closest" function and creating a "distanceTo" ...
3
votes
2
answers
3k
views
ArcGIS Pro: Create polygons from outlines of unclosed lines
First a disclaimer: I have very little experience with ArcGIS, I usually use QGIS and only recently started using ArcGIS Pro.
I have a River dataset from the Natural Earth Site, then made its ...
- 51
3
votes
0
answers
721
views
Custom formatting coordinate grid using QGIS
I am custom formatting my coordinate grid.
Is there a way to change the following formula so that the output comes with a decimal and suffix?
substr(@grid_number, length(@grid_number) -6,5)
The ...
- 31
3
votes
0
answers
55
views
Raster statistics per latitude cross-section
I want a profile graph with biomass volume across a landscape's latitude. Im using ArcGis Pro 2.3.3. It's hard to explain so I'll provide a rough sketch of the desired result:
The sketch shows a ...
- 101