All Questions
3,390 questions
1
vote
1
answer
27
views
Concatenation of commands in SAGA grid calc
My goal is to mask pixels with chosen value, for example if g1 is equal to x1,x2,x3 the resulting pixel has to be set to 1 otherwise to 0.
Through grid calculator I've tried this command:
eq(g1, (x1 ...
- 11
0
votes
0
answers
91
views
Exporting with ArcMap over 2000 dpi
I am a geology student trying to export a map I produced in very high resolution so I can zoom in and across the ground with speed and still be able to see all the detail.
My base map is 5cm ...
- 1
0
votes
0
answers
174
views
How can I create a grid overlay that accounts for feature density instead of map unit area?
I am working with the below spatial data (each point does contain relevant attribute information). I need to be able to audit these data for completeness and accuracy against the associated data from ...
- 172
1
vote
1
answer
136
views
QGIS layout, split grid coordinates from A to Z
I have been using the layout manager to make coordinates for this map. I am fairly new to QGIS so my knowledge is a little limited on how to do this.
I have used this code
if ( @grid_axis = 'y' ,
...
- 13
0
votes
0
answers
158
views
Huge layer takes too long to load and it's hindering my workflow
I have a huge point shapefile of InSAR data, on the heighs of 300k+ points in a single shapefile, over a large area. My workflow consists in manually checking and ensuring the quality of some points; ...
3
votes
1
answer
255
views
Straight lines appearing on print layout for ortho projection
I've created an orthographic projection map, and have added it to a print layout. When I then add a lat/lon grid at 10 degree intervals I get straight lines across the image as well as the curved ones ...
- 31
3
votes
1
answer
671
views
Why does the right side coordinate does not appear?
I was working on QGIS 3.28 and the CRS is WGS 1984 Web Mercator. Apparently my right side coordinate doesn't appear in scale 1:750.000.
But it appears when I change the scale to 1:2.000.000 or above.
...
- 31
1
vote
1
answer
267
views
Automatic / Parametric Grid generation across multiple polygons in QGIS
I have a following problem:
I have a layer with numerous polygons inside (Over 400). I need to generate grids inside every polygon.
When using the Grid process over a layer, the generated grid covers ...
- 69
0
votes
0
answers
37
views
Reproject raster from rectilinear LCC to rectilinear GK
I have many climate raster (netcdf) in a rectilinear grid in LCC projection (EPSG 3034) and I want to reproject it with python to a local Gauß Kryger projection (31467).
Reprojecting every raster ...
- 95
0
votes
1
answer
27
views
Setting correct options for grid using EPSG 3004 in QGIS 3.10?
I would like to produce in QGIS a layout with the grid.
My project is based on EPSG 3004.
I manage to use the grid tool until a certain point, because the coordinates seem very messy.
What can I do in ...
- 533
0
votes
1
answer
268
views
Cannot open enterprise geodatabase table from workspace
I'm trying to create a REST Flask API to use instead of geoprocessing with the toolbox. Using the ArcGIS Python environment, I was able to make use of the libraries in Flask, but I'm facing a problem ...
0
votes
0
answers
57
views
How to receive the toolbox's messages
I developed a toolbox that reads an Excel file and fills up a feature layer. The toolbox works fine I just want to receive the messages at the client side to add a messaging log for the user to follow ...
1
vote
0
answers
35
views
When I add a grid "Layout" the units don't match with my map's
When I add a Grid in Layout and select "Map units" and Interval the units still don't match
- 11
0
votes
0
answers
290
views
ArcPy changing scalebar and grid parameters
I'm trying to use ArcPy in ArcMap, so Python 2.7, to automate the basics for the maps I make on a daily basis. Rather than having myself setout certain elements I want Python via the ArcMap API to do ...
- 533
0
votes
0
answers
138
views
Problem displaying Hebrew-language in Attribute tables (ArcMap 10.2)
Recently I migrated my ArcGIS project unto a new computer, both PCs using the ArcGIS Desktop ArcMap 10.2 software. The databases and projects are in Hebrew.
However, when I came to open the attribute ...
- 1
0
votes
1
answer
247
views
Adaptive grid to balance sample density [closed]
I have been following this tutorial https://james-brennan.github.io/posts/fast_gridding_geopandas/ in order to create a grid on a geographical area and to assign labels to each point.
I was curious ...
- 119
4
votes
1
answer
882
views
How to show pixel boundaries of a given raster in QGIS?
The Norwegian Meterological Institute provides historical weather data. I download one of these .nc files:
curl https://thredds.met.no/thredds/fileServer/ngcd/version_22.09/RR/type2/2022/08/...
- 2,690
2
votes
1
answer
681
views
Vertical grid shift with PROJ 9
I want to perform a vertical grid shift using PROJ 9.I have never used PROJ syntax and I am having some issues to have it right.
I have checked documentation and this previous post from which I got a ...
- 123
1
vote
2
answers
336
views
Creating an irregular point grid with provided row and column numbers in PostGIS
I am looking to create an irregular grid of points via PostGIS, using the four provided corner (point) coordinates, and number of point-rows, and point-columns.
Four corners may or may not be ...
- 13
1
vote
1
answer
485
views
Create a grid for more than one country in R
Some time ago I posted my own answer to create a grid inside a country to be used in kriging interpolation:
0........0.kriging error messages, grid file problem ? (automap, gstat)
This grid was for ...
2
votes
1
answer
548
views
QGIS Map Composer frame to show numbers and letters [duplicate]
I'm trying to create a tactical burn plan map using QGIS. 3.10.3. It needs to be able to be used by lay people to communicate where features are on the map.
To do so I need the map frame to show ...
- 21
0
votes
3
answers
4k
views
Adding Lat/Long Coordinates to Frame in Print Layout
I am still learning how to use QGIS: I am making a map of a location in Antarctica, so I am using WGS 84/Antarctic Polar Stereographic coordinates (EPSG:3031). I have put the map into a print layout ...
- 1
-1
votes
1
answer
229
views
Creating fishnet based on DMS Coordinates
I am trying to create a random sampling map of an ocean area. To do this, I would like to create cells that are 1' x 1' in size (one minute by one minute in DMS). My map is using WGS 1984 Web Mercator ...
- 1
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
0
votes
1
answer
93
views
ArcPy GridIndexFeature doesn't calculate square Grids - But using the tool in ArcGIS Pro desktop it does
I am currently trying to create Grids for several counties in my country.
Therefore I wrote a Python script using ArcPy and the GridIndexFeatures tool.
I want a 1000x1000 Meters Grid. If I am using ...
- 41
1
vote
1
answer
56
views
Retrieve scale-value of a specific map in specific print-layout for using this scale in model-builder
I made a model with the model-builder which create a grid with its height- and width-size dependend on the size of a certain map in a certain print-layout. It allready works fine.
But that for I need ...
- 11
0
votes
1
answer
164
views
Creating polygons that follow the curvature of the Earth in ArcGIS JS
I am trying to divide a globe into equally sized squares and render them using ArcGIS JS where the rendered polygons follow the curvature of the earth.
So far, I've made an algorithm to divide a ...
- 71
1
vote
1
answer
290
views
How to enable grid decorations programmatically in QGIS3?
I'm developing a plugin that will enable the grid decorations(like copyright, scale bar) on the map canvas, but I don't find any clue on how to do it.
Just to clarify I don't want to create a grid ...
0
votes
1
answer
92
views
Opening ArcGIS Pro data with definition queries and symbology in ArcMap
I have a several datasets in ArcGIS Pro which I have queried and symbolised. I would like this exact same dataset with the same queries and symbology to be available in ArcMap as well. I was hoping to ...
- 368
0
votes
0
answers
86
views
QGIS geographic grid
I need to know why my geographic grid it is not 37mm / 3,7 cm, I guess this bug or somethings is not true, I need to print grid with 30" interval and 37mm length of grid in milimetre.
QGIS ...
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4
votes
1
answer
2k
views
QGIS Grid not displaying correctly
I'm trying to create a map from a specific province in Argentina in QGIS 3.10. I am trying to create a map showing multiple coordinates showing hail fall data exported from a csv file and projected on ...
1
vote
1
answer
616
views
HitTest with MapImageLayer not returning sublayers
I'm new in ArcGIS, and what am I doing is viewing MapImageLayer with all of sublayers.
But, when clicking on point and running hitTest it returns 0 results.
Below the code:
<script>
require([...
- 11
6
votes
1
answer
615
views
QGIS custom grid overlapping in printing layout
I've set my custom grid in the print layout. The problem is, that in one corner both values from X and Y axes overlap each other.
I used the offset, as you can see below, but I am wondering how to ...
- 3,791
9
votes
1
answer
248
views
Match map's borders to graticule in QGIS Layout
I'm using QGIS v.3.22.0.
I've been going crazy trying to adjust a map size to match a graticule in the Print Layout.
I don't want to have any squares cut in the middle.
I don't want to adjust the grid ...
- 363
-6
votes
2
answers
765
views
Measured grid in Mapbox [closed]
I’m trying to create a reference / measured grid in Mapbox so that each grid tile represents a consistent square shape. I know this square shape might not represent a consistent area.
Using long and ...
- 31
0
votes
1
answer
42
views
After sDNA integration analysis, the integration results of radius N and 500 are consistent, and the coordinate system is WGS84 Mercator projection
After sDNA integration analysis, the integration results of radius N and 500 are consistent, and the coordinate system is WGS84 Mercator projection
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1
vote
2
answers
919
views
ArcMap - How to create a grid in acres
In ArcMap, I need to depict points per acre as a layer on my map.
How do I create a grid layer with the grid cells equal to one acre?
My resolution is 1 meter. I've been working with Fishnet and have ...
- 11
0
votes
0
answers
105
views
Setting reference grid to map layout on ISO A4 page template in ArcMap but grid is not fitting to data frame
I am using ArcMap 10.8.1.
I have attached both the screenshots of the map layouts. When I am working with a previously saved Map Layout which I created in ArcMap 10.5, the grid is showing in proper ...
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1
vote
2
answers
1k
views
Adding decimal degree reference grid in ArcMap
How do I add a decimal degree reference grid to ArcMap that is multiples of 2?
See attached photos for what I have vs. what I would like. I have tried changing the interval under data frame properties ...
1
vote
0
answers
25
views
Creating extra reverse polyline in ArcMap
I want to create a piping network.
When I import my AutoCAD file in ArcMap, the program creates an extra reverse polyline.
For example if I have a polyline which is include 50 spot, the GIS draw a ...
- 11
0
votes
0
answers
219
views
Adding coordinate labels to vector grid lines using QGIS
I would like to know how I can add coordinate labels to the gridlines, created by the "Create Grid" function in the "Vector->Research Tools" menu, in QGIS 3.18?
My goal here is ...
0
votes
0
answers
58
views
OS Grid reference control clash with version 6.3.1
I would like to implement the OS Grid reference control, which is here:
http://eap.ucr.ac.cr/mapas/ol-ext-master/examples/canvas/map.control.gridreference.html
I have modified the code for my needs, ...
- 3,791
3
votes
1
answer
63
views
QGIS problem with labelling grids
I would like to label my grids in QGIS. I know the Printing Layout option presented i.e. here
https://geoafrikana.com/how-add-grids-and-grid-frame-map-qgis/
but yet as the layer.
I want them as ...
- 3,791
0
votes
0
answers
52
views
Combining point feature classes with identical locations in ArcPy
I have 3 point feature classes made from rasters that have identical locations and "pointid". I want a single feature class that 1 point for each location but contains the "gridcode&...
0
votes
0
answers
294
views
Setting a .sde connection file as a default value in an ArcPy toolbox
I am building a tool to run some routine data maintenance on an Enterprise geodatabase with Python. I would like to set the default value for one of the parameters to database connection file on disk. ...
- 1
3
votes
3
answers
795
views
Grids of basemap when exporting PDF in QGIS print layout
I've been getting perpendicular lines through my basemap imagery in my QGIS layout exports to PDF (see photo).
Some notes:
The lines do not appear on the export screen.
I have guides built into the ...
- 323
2
votes
1
answer
174
views
ArcGIS Python query syntax
I am struggling with running a simple piece of code using Python in ArcGIS field calculator. I suspect it could be a very simple error and need an extra set of eyes.
For summer months (Dec-Feb) and ...
- 143
0
votes
0
answers
27
views
Why WGS-84 1-second grid strokes are not drawing in QGIS (3.20.2)?
I have a project in the Mercator projection (QGIS (3.20.2)). I created a layout of the future map, where I adjusted the coordinate grid (WGS-84). Added 1 second, but part of its interval is no longer ...
- 13
3
votes
1
answer
839
views
"No feature was found..." when making custom grid coordinate format
I'm in QGIS layouts trying to make a custom grid coordinate format but get the error:
No feature was found on this layer to evaluate the expression.
This error does not appear if I have a single ...
- 333
1
vote
1
answer
372
views
How in QGIS to place the signature of the latitude and longitude of the map corner in the layout?
It must be done as in the example.
- 13