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2
votes
1answer
40 views

Finding sum of points values within distance from paths

I'm willing to plot public transport data for a university project, and I'm currently trying to find out roughly how many people live with a reasonable distance from a set of bus routes. I have my ...
1
vote
0answers
24 views

Importing raster data automatically to GeoServer

I'mtrying to make an automatic raster data import to GeoServer for later use in an OpenLayers web application in which i need to add raster files frequently, so I added Image Mosaic JDBC Plugin and ...
0
votes
0answers
13 views

Map download failed, Unable to download map. The operation couldn't be completed. Failed to create replica. Failed to create replica

I need help resolving this error: Error text: "Map download failed, Unable to download map. The operation couldn't be completed. Failed to create replica. Failed to create replica." I have a ...
1
vote
0answers
12 views

MapProxy : possible config issue?

I created a yaml config file and ran it with mapproxy-util serve-develop my-config.yaml The file contains this: services: demo: tms: kml: wmts: capabilities: http://localhost:8080/wmts/1....
0
votes
0answers
31 views

Getting complex CAD drawing to right location in QGIS?

I have a complex CAD drawing from a city with many layers..hatches, points, poliylines..and I need it to georeference because when I import the DWG file into QGIS it turns out to be at the wrong place....
1
vote
2answers
23 views

PostgreSQL - query empty string fields [on hold]

I'm loading OpenStreetMap data into a PostGIS database with Imposm3. Regarding the documentation Documentation, fields with NULL are stored as empty field. To query attributes who are not empty I ...
-2
votes
0answers
24 views

Extracting WorldClim data for specific longitudes and latitude data frame? [duplicate]

I want to extract the following data for my longitude and latitude data frame (samples) Maximum monthly rainfall, Minimum monthly rainfall Mean monthly temperature Daily temperature range Monthly ...
0
votes
1answer
22 views

Using variable (input parameter) as out_name to create feature class?

I have a dilemma, I am trying to create a new feature class, but I want the user to be able to input the name of the new fc. I have created the variable 'newFC' as getparameterastext(2), but how do ...
0
votes
0answers
21 views

Adding new polygon to existing shapefile? [on hold]

I have downloaded countries of world shapefile. Since Russia is stretching across two continents I want to create two new polygons Russia European part and Russia Asian part, but the original Russia ...
-2
votes
0answers
6 views

adding vertical headers to ag-grid [on hold]

I want to conserve space by using vertical headers on my ag-grid I can rotate the headers fine but it seems when I reduce either the width or the height of the span the text is shrunk. See attached ...
3
votes
2answers
49 views

Calculation of density metric of 0.75 height quantile

This is a piece of code that I wrote: metrics<-function(z){Q75=quantile(z,probs=c(0.75)) aboveq75=sum(z>Q75) dh75=aboveq75/length(z) return(dh75)} DH75<-grid_metrics(lid,~...
2
votes
2answers
38 views

Upscaling Raster Data in Python

Edit Solved Thank you to user2856 for helping me crack this. For anyone looking to solve this in future hopefully this is helpful. import geopandas as gpd import rasterio as rio from rasterio import ...
1
vote
1answer
41 views

How to make colored hillshade in QGIS?

Today I found that ArcGis can make colored hillshade like on piture below. Here is link to their blog. I want to do that in QGIS. I know about layer coloring feature, and it's close for perfect, but ...
1
vote
1answer
32 views

River network from DEM

Anyone who know if there is a method of creating rivers network from digital elevation model in qgis as it does in contour.
-6
votes
0answers
29 views

spatial query with ST_DWithin [on hold]

What roads does road A306 connect with? (Hint: Use the ST_DWithin function with a very short distance)
0
votes
0answers
28 views

Shift points onto a line in QGIS 3.8

I am working on some poorly digitized data, which I am cleaning up. Using the topology checker I find that a large number of points do not sit directly on a line as intended. They seem to be of the ...
2
votes
0answers
29 views

“RasterioIOError: This is a BigTIFF file. BigTIFF is not supported by this version of GDAL and libtiff” error message

I am trying to read a raster ".tif" file with rasterio: import rasterio raster_path = r'.........\file.tif' raster = rasterio.open(raster_path) but I am getting the following error message: "...
1
vote
0answers
17 views

Problem with encoding after using ''join by location''

I used Join by location and for some reason the results I get have weird encoding, i have checks and it's UTF-8, how can I solve it
0
votes
0answers
23 views

Least Cost Path in QGIS: Plugin or SAGA or GRASS?

I downloaded a SRTM file and followed this tutorial and now I have a hillshade layer and a color layer. It looks like this. I want to calculate the least cost path between p1 and p2. But I'm not ...
0
votes
0answers
14 views

Mapbox GL JS : Setting bounds of raster tile layer

I have some weather radar data as a raster tileset. Mapbox documentation states that raster tilesets will default to the size of the world on the map unless otherwise specified. Here is my code for ...
1
vote
1answer
32 views

QGIS 3.4 Rule Based Symbology - Exact Matches Integers in String e.g. 2,12 + 1,2,3,12

I have a shapefile containing a String Type Field called 'Class'. This field contains one or more integers separated by commas. I want to create Rule-Based symbology matching only 2, 12, 1 ...
1
vote
1answer
42 views

PostGIS query from three tables

I am new in PostGIS and want to learn. I faced the query where I have to find one point in two different layers or table. I created a query like this but it is not giving the desired result: SELECT b....
-2
votes
0answers
14 views

Need python idle with pre-coded toolbox [on hold]

I need python toolbox with pre - installed set of label , buttons, which is similar to visual studio toolbox .Is there any python idle available with set of pre-coded toolbox ?
0
votes
0answers
13 views

My point cloud orientation is very wrong

I'm trying to load a cloud point using Cesium and Entwine. This is my code until now: First I convert a LAS file to EPT using this tutorial but need to convert projection to EPSG:4978. entwine ...
-3
votes
0answers
34 views

How to QGIS least cost path analysis [duplicate]

I want to do some least cost path analysis and I followed this website. Now I have a hillshade layer and a color layer. Is this enough for least cost analysis or do I need something else? And if it is ...
1
vote
1answer
38 views

Which layer for least cost path analysis

New QGIS user here, so maybe it's kind of a stupid question. I want to calcualte the least cost path between two points but I don't know which layer to use. I have two layers, one is a hillshade layer ...
0
votes
1answer
19 views

Get field value: JSON response from feature service

I have JavaScript in work order management software: load("nashorn:mozilla_compat.js"); importPackage(java.util) importPackage(Packages.psdi.server) var ctx = new HashMap(); ctx.put("url","https://...
0
votes
0answers
11 views

ArcGIS Python API Plotting ValueError: setting an array element with a sequence

Got a pandas spatial df using ArcGIS python API. The data is read in via pd.DataFrame.spatial.from_featureclass()–i.e., a shapefile. Once loaded, df has a SHAPE column, as you see here. Next, ...
1
vote
0answers
12 views

QGIS 3.6.0 when shutting down hangs with 'Running checks' message

When I have used the Layout Manager to print several different layouts, then go to exit from QGIS (Windows 10), I get a message that the shutdown cannot complete because QGIS is 'Running Checks' and ...
1
vote
0answers
15 views

Visualizing Subplot Overlap

I have a bit of trouble visualizing my data. I have a dataset with 60 minutes of seismic signals and i determined the signal source areas. My goal now is to find out how the results change using ...
0
votes
0answers
52 views

Thematic map made in QGIS

I made a thematic map of carbon stock in Russian Federation in 2017 year. I am not a cartographer and geographer at all. Tell me please what should I do with this map to make it more professional? ...
0
votes
0answers
14 views

PostgreSQL self-join query condition not to return repeated results [on hold]

I have this simplified query : SELECT a.p_key, b.p_key FROM test AS a, test AS b WHERE a.p_key != b.p_key -- skip self AND a.p_key < b.p_key -- symmetry breaker -- missing extra condition ...
3
votes
1answer
58 views

Calculating real length and slope of roads

I have collected points alongside road in form of csv files with z-values. When imported in QGIS I used Set Z value and Points to path to make line. When I use right button in Identify Features tool I ...
0
votes
0answers
11 views

Custom formatting of numbers in route hatch labels

In ArcMap 10.5, custom formatting of numbers can be done, say, as 12+345 for 12345. How to do it in vbscript for labeling route hatches?
1
vote
2answers
34 views

Calculate NDWI of each image in a Imagecollection?

var L8 = ee.ImageCollection("LANDSAT/LC08/C01/T1_TOA") .filterDate('2016-06-01', '2016-07-31') // you can change date here .filter(ee.Filter.lt("CLOUD_COVER", 0.75)) .filterBounds(collection[i]) .map(...
1
vote
1answer
29 views

Angular - How to visualize GeoJSON on Google Maps

I am using @agm/core for visualization GeoJSON on Google Maps. But I can't display my buildings on Google Maps. I think the problem is the geometry that is represented as multiple аrrays. I used FME ...
1
vote
2answers
45 views

Sum up rasters in R

I have 365 rasters (daily_sm2rain data of a year) in .TIF. I would like to create a new raster which is sum of 365 input rasters in R (~ sum of rain in a year). How can I do this? I tried input=...
0
votes
0answers
26 views

Creating component Local Government Area from a State Boundary in QGIS [on hold]

I created a State boundary in QGIS but I want to extract the component local government Area out of it. Please I need someone to guide me on the steps to go about this?
1
vote
0answers
18 views

Resample function doesn't work for Landsat-8 NDVI 8-days product in Google Earth Engine

I am using Landsat 8 Collection 1 Tier 1 8-Day NDVI Composite in Google Earth Engine and I want to export it with the projection same as code editor (EPSG:3857). However, when I add the reprojected ...
2
votes
0answers
18 views

Clipping interpolation layer to a coastal boundary in QGIS 3.6?

I have created an interpolation layer and want to clip it so I don't see the area outside the coastal boundary. map showing area to be clipped:
1
vote
1answer
88 views

Error adding qgis.org repository public key to apt keyring

The old QGIS key ring qgis-2017.gpg.key is expired and generates a warning during apt update today. Following the QGIS instructions, I tried to update the key as follows: wget -O - https://qgis.org/...
-1
votes
0answers
14 views

Getting DEM for many small areas located all over world?

I need to calculate the average slope over an area for thousands of polygons with locations all over the globe. The polygon areas are small, less than 1 square kilometer. I have to use a consistent ...
1
vote
0answers
13 views

Speed up the shortest distance calculation using pgRouting + PostGIS

I have to calculate the shortest path and corresponding distances for 300k+ origin-destination (OD) pairs. Using the query below it takes me around 0.3 sec to calculate one distance and therefore more ...
0
votes
0answers
30 views

Error on “go get github.com/lukeroth/gdal” [on hold]

When I type "go get github.com/lukeroth/gdal" in windows machine, I am getting an error and it says ..go\src\github.com\lukeroth\gdal\algorithms.go:4: ./go_gdal.h:8:10: fatal error: gdal.h: No such ...
0
votes
0answers
14 views

Addin to Style Legend

I created an arcpy script to apply a style to my legend from my style template and it works when using the module within arcmap. But i want to add it as an addin button. import arcpy import Python ...
0
votes
0answers
20 views

Calculating total cost along multiple polylines using ArcGIS Desktop?

I'm looking to create a new sewer line. Part of the process includes making a cost analysis, which mainly centers along elevation. Areas that are lower than the treatment area need to be pumped, areas ...
2
votes
1answer
30 views

Converting Grayscale GeoTiff to PNG using QGIS results in all black image

I have a GeoTiff in QGIS that I created by merging some images inside QGIS. It looks like this: I use Raster>Conversion>Translate. And save it as a PNG. I then open the image in both, Photoshop ...
1
vote
0answers
18 views

QGIS 3.4.10 for Mac users…Digitzing polygons

I have just installed the LTR version of QGIS (3.4.10) and am having trouble telling QGIS when I have finished a polygon. In fact, I can't. It used to be in earlier versions that to end a polygon you ...
1
vote
1answer
20 views

QGIS failure in PostGIS connection: “ident authentication failed for user”

I am trying to use the 'ident' authentication of for local PostGIS (2.5) server, so that each user can connect to his/her account without having to provide password. The local connection (to 127.0.0....
0
votes
0answers
19 views

Converting geocentric coordinates to geodetic coordinates?

I would like to start by saying that I am very new to this. I have 160 different points which all have similar layout as below: at point | X= 153346.357 | Y=354912.111 | Z=0 | Doing some research I ...

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