All Questions

1
vote
1answer
10 views

Qfield viewing features in layer without geometry

I created Qfield project that includes layer without geometry. I can successfully create new features but couldnt find a way to edit or view created features on mobile device. I looked through ...
1
vote
3answers
35 views

Generate points along branching lines

I am looking to generate points along a series of connected lines at regular intervals, but I wish to keep this interval even when a line is branching into 2 or 3 other lines. All the regular tools I ...
0
votes
1answer
18 views

Reading a GeoJSON via Java GeoTools API issue

I'm trying to read this GeoJSON from this string: { "type": "FeatureCollection", "features": [ { "type": "Feature", "geometry":...
0
votes
0answers
14 views

How to keep original coordinates system effective when using tile layer?

In my Leaflet application I used to display a background layer with an ImageOverlay. But since the image is too big and slow down Leaflet processing, I switch to a tiling approach. I used gdal2tiles-...
1
vote
1answer
26 views

Mapping & digitizing geographic features freehand? [on hold]

I´m working on a project to map a colleague´s farm, and then ultimately digitizing that information to produce maps and signage. To start, we´re focusing on a small agroforestry plantation. We want ...
1
vote
0answers
15 views

Why is the difference between 005 and 006 versions of MOD13Q1 data?

I tried to repeat a project that used EVI in MOD13Q1. I failed and found that the project used the 005 version of MOD13Q1, and I can only download the 006 version on NASA's ftp. I compared the 005 ...
5
votes
4answers
236 views

Identifying “long and narrow” polygons in with PostGIS

I have a set of polygons representing large areas, say city neighborhoods. I want to identify the large overlapping areas between them. But there's a problem: sometimes these polygons will overlap ...
0
votes
0answers
8 views

Using arcpy.mp to edit TEXT_ELEMENTS with no success

I'm attempting to take a user input in a script tool to modify the text within text elements on a layout. The following is the code I am using: aprx = arcpy.mp.ArcGISProject(r"S:/Initiatives/Mailings/...
0
votes
1answer
24 views

Understanding ArcMap automatic rematching?

I am geocoding fairly large data using ArcGIS. I had a considerate amount (16%) of locations had tied results after geocoding using a composite address locator using multiple fields. I am curious what ...
1
vote
1answer
12 views

Export Rasters from geodatabase containing specific words in title

I have a file geodatabase containing +200 rasters. I want to export a selection of these based on words in the middle of the file name. Example file names below: Bat_day_male Bat_night_male ...
0
votes
1answer
15 views

Rasterizing MULTIPLE vector layers in same “grid” so I can do a regression of sorts across pixel units?

For my research, I have collected a bunch of climatic data from my state in vector form. I also have my raster data, which is about 60 points around the state that have a binary assignment of yes/no. ...
0
votes
1answer
26 views

Solve Esri Toolbox produces empty Shapefiles (make route layer)

I am making a Toolbox for finding the best Pizzaroute between 7 Pizzastops. We used the make.routelayer from ArcPy. Our Pizzaroutetime expressed not our expression, rather all Firestations (station 1-...
-1
votes
0answers
8 views

Write coordinates to the polygon of the shapefile by gestools [on hold]

I have an array of coordinates and how to replace the existing coordinates in the polygon with it.
1
vote
1answer
22 views

What is the equivalent of QgsMapToolIdentifyFeature in PyQGIS 3?

I was trying to use the QgsMapToolIdentifyFeature() tool as shown in an answer of StackOverflow, but when executed it gave the error: 'QgisInterface' object has no attribute '...
2
votes
1answer
16 views

“AND” or “OR” in filterMetadata in Google Earth Engine

I would like to filter out only the leap years from my imageCollection using the 'system:index' property: var polygon = ee.Geometry.Polygon( [[[-3.1929991656897982, 57.196020922235135], ...
2
votes
1answer
17 views

element-wise subtraction of one property from another in a FeatureCollection

I would like to calculate RMSE for a model. I have a FeatureCollection that contains the modelled and origianl properties. How can I do an element-wise subtraction (as the beginning of calculating ...
1
vote
1answer
35 views

Efficiently query two properties QGIS spatialite

I have a simple query that involves two steps: non-spatial criteria (should be super-fast) spatial criteria (which is really slow) I would like to run the spatial query only on the filtered layer (...
0
votes
0answers
7 views

Uploading .nc file on GeoServer

I have downloaded the netCDF plugin for GeoServer 2.15 and put it in its directory >> it had been shown on GeoServer as raster data >> but while uploading .nc file by using this plugin I still have ...
0
votes
0answers
15 views

GRASS: import PostGIS vector layer into SQLite database

I am working with vector layers (points) composed of more than 100 000 geometries. These layers are originally in a PostGis database and I import them with v.in.ogr, using a formulation like: v.in....
1
vote
0answers
23 views

Copying features certain number of times between layers in QGIS

On the image below, there are two layers showing the transportation network Red | current | only important objects | geometry repeats/overlaps Blue | new | required and other objects | ...
-1
votes
0answers
30 views

Calculate field area [on hold]

I want to calculate area cultivated by tractor using GPS data (Latitude & Longitude) only (i.e., where density of coordinates are more), it should exclude the region (where density of coordinates ...
0
votes
1answer
23 views

How to repeat drawing function in Leaflet

I am trying to create a Leaflet.js web map that gives users the opportunity to draw lines. this line will be sent to mapquest elevation API to be retun to the map as a GeoJSON with elevation data ...
2
votes
1answer
13 views

Problem with the QgsFieldExpressionWidget

I try to customize the QgsFieldExpressionWidget. But if I open the Expression Dialog, the "Fields and Values" are empty. What I am missing? lay= iface.activeLayer() wid = QgsFieldExpressionWidget() ...
0
votes
1answer
30 views

GeoServer upload shapefile via REST

I'm trying to upload a shapefile to GeoServer and I noticed an inconsistency in the layer creation depending on the upload method. When I use the REST API the properties of the original shapefile are ...
1
vote
0answers
24 views

Extracting raster

I've been using my own code to extract multiple rasters using a single shapefile. I've just substituted the strings (inputs, file paths etc.) to my code: import subprocess, os, glob, gdal ...
0
votes
0answers
10 views

QGIS server doesn't publish layers, that come from WMS source

I have a QGIS 2 project, that contains some layers from local sources, and a couple of "background layers" that come from "external" WMS sources. If I publish this project in QGIS server 2 the local ...
0
votes
0answers
5 views

Convert Planet Imagery Surface Reflectance product DN to surface reflectance values

I have a PlanetScope Ortho Scene Product (3B) which includes an AnalyticMS.tif and AnalyticMS_SR.tif files. Based on what I have read so far, the AnalyticMS_SR.tif file is scaled surface reflectance ...
1
vote
0answers
13 views

Getting QGIS Model Processing Raster Calculator Error?

I am using "raster calculator" tool of the saga in my model. The tool correctly executes raster operation like "a * 2" in value formula option but the same expression is not executed pre-calculated ...
1
vote
3answers
76 views

Creating polygons that share the boundaries of existing polygons

I'm creating polygon (that about actual vegetation). First, I create one polygon After that, I will create more polygons that share the boundaries of existing polygon. But, it show result like below ...
0
votes
1answer
11 views

Error in Geomesa shapefile ingest

I am trying to ingest a point shapefile to geomesa, I have added the schema and convertor part to conf file but when i am giving the ingest command usinf geomesa-fs it is giving me the below error. **...
-1
votes
0answers
25 views

How to validate angle in Geotools

I have a point layer, I need to calculate angle at each point. Using this, I generated angles. Angles are in different ranges. How can I validate angles which I got? This is my code snippet public ...
0
votes
1answer
13 views

Geoserver SLD - priority option displays multiple labels

I'm using priority option for labels in my geoserver SLD stylesheet because I have multiple overlapping points. <Priority> <ogc:PropertyName>language</ogc:PropertyName> </...
0
votes
1answer
17 views

Adding tile size and compression type for ArcPy code?

I have to add tilesize and compression type to the following code import arcpy arcpy.CopyRaster_management("c:/data/background.tif", "c:/fdgb/CpRaster.gdb/fgdbRD","...
0
votes
0answers
14 views

For a specific point in space, get the pixel in which that point lies (in R)

I am a bit new to the spatial packages of R. I have a hdf file from which I can get a data.frame with the latitude and longitude of the corners of the pixels, and the latitude and longitude of the ...
0
votes
0answers
9 views

Getting error from Arcpy Tabulate_area

I am trying to get the area of land use in each pixel of the fishnet file. I used the following script: arcpy.gp.TabulateArea_sa("fishnet_layer","FID","lulc.tif","Value","lulc_tab","1.1E-3") Here ...
0
votes
0answers
14 views

Con statement with multiple AND fails

I have a conditional statement that runs through multiple rasters. It produces the correct output in Raster Calculator but not when I run the code. I don't get any errors, it just creates blank ...
0
votes
0answers
4 views

How to remove clear selection option from options menu of ArcGIS feature table?

I am using ArcGIS Online and ArcGIS's feature table. I want to remove "Clear Selection" option from options menu i.e. present on the right corner(please check image's red border area). Do you have ...
1
vote
2answers
23 views

Mapserver GeoJSON input

Is it possible for MapServer to read GeoJSON file and serve it as a layer in the .map file? Like how it can be done with shapefiles as shown below: LAYER Name 'land' TYPE POLYGON DATA '...
1
vote
1answer
17 views

How to solve “ERROR 000732: Input Raster: Dataset Con( does not exist or is not supported ” in a for loop [duplicate]

I'm trying to reclassify rasters based on standard deviation. I created this code, but I think I'm wrong using "Con". I would like to assign value 1 to rasters >= to threshold and rasters <= to ...
-1
votes
0answers
12 views

Converting map to KML/KMZ-file format [duplicate]

I would like to open this map on Google Earth or convert it to a KML/KMZ-file. How can I accomplish this?
1
vote
1answer
33 views

Can we call a single attribute entry (=one row) “a feature” of the Layer?

For the single layer(for example Airport layer) there are many entries in the attribute table.Can we call single attribute row entry a feature of the Airport Layer? Can somebody give clear view of ...
0
votes
1answer
28 views

DEM does not show the details of the land [on hold]

I wonder anyone knows why my DEM image does not show the details of the land? It looks very vague like this: While I think it should be like this:
4
votes
1answer
65 views

Deleting features in PyQGIS?

I am comparing geometries of input layer and output layer features. I want to delete features in output layers which has equal geometry to input feature. I am using following code to do that. for ...
3
votes
1answer
25 views

Specifying snap raster in QGIS?

I am deploying QGIS 3.6 on Windows 10. Using the Raster > Projections > Warp (Reproject) tool, I need to reproject a single-band, float32, GeoTIFF DEM from EPSG:3413 to EPSG:3857. The output ...
1
vote
1answer
23 views

Can arcpy read dynamic text as appeared in ArcMap?

Just wondering if we can read dynamic text in arcpy? For example, assume we have a Text Element called myText which contains a piece of dynamic text Map <dyn type="page" property="index"/>. ...
1
vote
0answers
58 views

Spliting shapefile by geometry in QGIS

I was wondering if there is a way to split a shapefile's features in QGIS? I have many polygons in a shapefile which are separated geometrically. But in their attribute table they all have came in ...
1
vote
0answers
24 views

How to run PyQT code inside python console(editor) in QGIS?

I have built a simple PyQt application(inserting list item in QListWidget) which runs outside the QGIS environment.I want to integrate that inside the QGIS so that all the map layers will be inside ...
-1
votes
0answers
15 views

3D WebGis development for Electrical transmission lines [on hold]

What is the best way to develop the 3D mapping WebGis application for Electrical Transmission lines, preferably using open source softwares.
0
votes
1answer
24 views

Controling or modifying FID order using arcpy.AddXY_management

Using arcpy with slightly modified code from created by Felix Creating parallel line in ArcGIS Pro using ArcPy I made four parallel lines. I then used arcpy.AddXY_management to extract the vertices ...
0
votes
1answer
18 views

Get code to run on every column in a table -Error “Could not find a public static method named …” -Mapbasic 17

I need to run a table update command on every column in a table. The code works fine when I manually define the column to work in but not when it is part of a for loop that gets all the column names I ...

15 30 50 per page