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Questions tagged [vector]

A coordinate-based data model that represents geographic features as points, lines, and polygons.

2
votes
1answer
58 views

Translating vector by raster DEM data in QGIS?

I'm trying to follow the set of instructions here: https://twitter.com/imhere_asia/status/1023055838787690496 [EDIT] Pasting the instructions here for reference so people can avoid twitter. ...
0
votes
0answers
22 views

Prevent Export/Save As of Vector Layers/Shapefiles

I have created a database using postgreSQL and created multiple users assigned with different roles Some of the users can only select and view the data and not update or delete any record. It works ...
3
votes
1answer
135 views

Exporting crown boundaries from tree segmentation in R?

I am using lidR package to segment my trees using lastrees directly from the points clouds. The function works fine, however I would like to export to vector file the canopy boundaries from ...
0
votes
1answer
74 views

How to batch geocode country names to polygons? [closed]

I have .xlsx dataset file with column "Country Name" and "Country Code" which have text records. I would like to geocode (assign) it to adequate country polygon in batch mode. The expected result ...
1
vote
1answer
39 views

QGIS3 How to export shapefile symbology to scale?

I'm looking how to export in QGIS3 a vector layer with a determined scale. It was straightforward in QGIS2 when I was exporting to a shapefile I had the option symbology scale but it disapear in QGIS3 ...
8
votes
2answers
260 views

Create line segments at point coordinates in QGIS

I have a point vector layer with angle field. How can I create line segments at these points with certain length and angle? I did this with style options but I need this physically as lines vector ...
1
vote
0answers
27 views

Vector to grid - Computing statistics by grid cells

I have a vector point data from drifting buoys (speed, direction, sst, slp) that I want to analyse in a grid. What are the right tools for this? Example of my points data below. Each point has the ...
0
votes
0answers
51 views

QGIS Display Attributes as Z Value for Point Shapefile?

I would like to create a state map that displays a 3D bar chart for each of 20 colleges (mapped as points) showing the percent share of engineering degrees earned by award level (i.e., assoc, ...
0
votes
0answers
45 views

Is there a Python script or geoprocessing tool that takes a folder of PBF Vector Tiles (TMS or XYZ Tiling Scheme) to VTPK (ESRI Vector Tile Package)

I'm trying to convert a folder of OSM PBF Vector Tiles to Esri's Vector Tile Package format (VTPK) for publishing in ESRI ArcGIS Enterprise. Building/generating vector tiles with ArcGIS Pro is too ...
0
votes
1answer
17 views

How to prevent labels from a vector file to overlap the raster file?

I have vector file of say Sewer lines with diameter as their labels. Against some of the sewer, georef. images are placed. While displaying all together, line labels do appear over the raster file. I ...
0
votes
1answer
140 views

How to properly import corine landcover 2012 (vector file) in QGIS?

I'm fairly new to QGIS (using version 2.18.25), so I may be missing something quite basic. I'm using the Corine landcover (clc12_Version_18_5.gdb) in my project. It's a very large dataset (3GB) so it ...
1
vote
1answer
215 views

Reclassifying shapefile using ArcGIS Desktop?

So I have a shapefile consisting of 1000 polygon records. I would want to reclassify one field "Value" into a new blank field named "New Value". As an example: record = 1; value = 25.6 record = 2; ...
0
votes
0answers
18 views

ERROR in R - it cannot support the vector

I did use the function crop and mean for 434 rasters in Rstudio. Each one is very big, it corresponds almost like 1/4 of Brazil. Now I want to calculate the standard deviation between these 434 ...
0
votes
1answer
39 views

Exporting vector from raster classification gives deformed vector in Google Earth Engine?

I am very new with Google Earth Engine and I try to make a landcover classification using Sentinel-2 imagery to get the urban area over a very large area (country wide ideally). I was able to ...
0
votes
3answers
65 views

QGIS: Intersect rasterdata with vectorline

I am new to QGIS. My aim is to be able to get information of the height at any point on my vector line. My raster is a map with height information in the format geotiff. The vector layer is in the ...
0
votes
0answers
16 views

Calculate average slope values for a point using 50ft vector perpendicular to contour

I am trying to calculate the average percent slope of a hillside on either site of a data point. I tried extracting info from a DEM using a radius around the point, but I believe a more accurate ...
3
votes
1answer
365 views

Rasterize (vector to raster) QGIS 3.4

I am trying to rasterize a vector with the QGIS 3.4 rasterize tool (not saga or grass tools). I prefer using this tool cause it is much faster. The values which i would like to burn are found in the "...
2
votes
1answer
51 views

How to connect polygons to make a circle?

I created polygons from a raster on which I ran an edge detection filter. I turned the edges into a polygon layer (multipart splitted into single parts). The intention was to have circular polygons at ...
0
votes
1answer
391 views

QGIS: Getting Concurrent mapset locking error using V.transform

Using QGIS 3.4.3 I'm trying to carry out a simple v.transform task shifting x and y But I'm receiving the following errors - and output shapefile is empty. Processing algorithm… Algorithm 'v....
4
votes
1answer
210 views

Vector layer does not appear with OpenLayers

When I import the vector it simply does not show in the map. I tried with a raster and it worked fine. I tried now with both KML and GeoJSON and the same thing happen, I can see that it loaded in the ...
0
votes
1answer
131 views

How to make layer stacking in envi for landsat 8

I downloaded landsat image 8 and i made layer stacking for RGB layers in ENVI (Bands 4,3,2) to classify the land cover types. but the problem appeared when i conducted supervised classification. I ...
1
vote
1answer
106 views

How can I export selected features in Processing Modeler?

This question is a follow up from a suggestion from this thread: How to export a single feature (line) from multiple layers and export to individual layers? I'm creating a batch process that selects ...
2
votes
0answers
38 views

How to export a single feature (line) from multiple layers and export to individual layers?

I have multiple vector layers representing a time series. Each layer contains many lines each. I want to select a single specific line from each of these these layers and save it to another layer. ...
1
vote
1answer
173 views

Vector difference between two polygon layers by attribute

Is there a way to do a 1:1 difference between two polygon layers based on a similar attribute? The layers have the same number of features with a shared attribute. I've tried the native QGIS ...
2
votes
2answers
110 views

What is the proper name for the “Venn diagram” of a set of geometries?

Sometimes, you have a set of overlapping geometries, and you want to generate an output like this: Image taken from this answer. The resulting polygons have no overlaps; each region of space is ...
1
vote
0answers
52 views

Raster values shows no data when using identify features tool

I used vector to raster function in QGIS, to convert some points with different values to raster. I tried to use the "Identify Features" to check values for each raster box. The values shows no data ...
1
vote
0answers
15 views

Deleting vector layer within buffer? [closed]

I am trying to delete points from a shapefile with vector information that intersect a buffer that was created. I have tried using the intersect tool, but that only highlights the information that ...
1
vote
0answers
61 views

QGIS fails to generate requested number of random points

Does anyone have any ideas what might be blocking this process? The layer has thousands of polygons totalling hundreds of thousands of square metres, but when asked to locate 140 random points even ...
3
votes
1answer
899 views

TypeError: “unsupported operand type(s) for /: 'int' and 'list'” in QGIS?

In a academic project I've produced a small python script for watershed analysis. This script relates shapefiles attributes and generates a .txt file. I am trying to adjust the script to use within ...
1
vote
0answers
51 views

How can I calculate the “average” or “median” result between a number of MultiLine Strings?

So I have a number (let's say 12) of multiline strings representing something that changes over time, like forest borders or shorelines. I want to create a single line that is the result of the ...
0
votes
0answers
22 views

Save each record in a shapefile to a new shapefile or KML [duplicate]

I have created a shapefile of 13 polygons. Each polygon is a single-part feature. I want to create 13 new shapefiles where each each shapefile represents each record in the attribute table. I know ...
2
votes
1answer
143 views

Delete vertices from a line pyQGIS

I have a line made of 17959 nodes. I want to delete several range of nodes from that line with a python command. For example I want to delete all nodes between node 5530 to node 5861 and connect node ...
0
votes
1answer
86 views

Single Side Buffer pyQGIS

I am trying to create a single side distance buffer around a line on QGIS. Here is the code I am writing but I don't get the expected result: processing.runalg("qgis:fixeddistancebuffer","input.shp"...
0
votes
1answer
39 views

Two parallel lines (vectors), only one feature (ID) [closed]

I have one shapefile that contains two parallel lines in yellow in the picture. Both lines have the same feature (these lines were originally both sides of a fixed distance buffer around a line). I ...
0
votes
0answers
129 views

OGR Python: Copying features from one datasource to another works with shapefile but not with geopackage

I have a shp/dbf EPSG4674 input datasource, and I want to copy features from one layer of this input datasource, create a new output datasource and write these features to that output datasource. As ...
1
vote
1answer
45 views

Connect outline gaps at vector shape

Could someone shed some light into a method to link breaking outline borders without much distortion from the original like e.g. convex hull does? Convex hull alternative ideas are of course welcome ...
0
votes
1answer
45 views

How to calculate the area of several classes of a raster in a polygon of a vector file with QGIS?

I have some trouble with QGIS I have two layers of information: The first one a vector that contains 500 objects, with attributes such as number of population, and... A raster that has three classes:...
2
votes
1answer
46 views

Export shapefile to CSV files by a grid I drew in a image

The shapefile is in orange and I need to export them into (1.csv and 2.csv etc...) corresponding to each grid I drew in the map. Is there any way this can be done in a single process?
1
vote
1answer
251 views

How to convert vector format (geopackage, shapefile) to raster format (geotiff) using rasterio without template raster

I'm looking to create a raster given just a geopackage (or shapefile, or other vector format). I don't have a template raster, and all I wish to do is burn the shapes into a raster using rasterio. ...
0
votes
1answer
94 views

QGIS Join vector point into polygon's

I have groups of vector points (GPS points) in a number of layers in QGIS. I would like to connect the points in each layer into polygons in each individual layer. I have look hard, but can not find ...
1
vote
1answer
65 views

Selecting points/buffers by location according to vector area value?

I am trying to select buffers "touching" a vector layer with a specific value. This vector layer comes from a categorized raster with values of 0 to 6. How can I select buffers that "touch" or ...
0
votes
1answer
56 views

Changing unknown coordinate system of raster data to known coordinate system?

I have a set of raster datasets and have created a raster catalog out of them. These datasets should cover specific vector data. I have just realised that the raster as tif data have a coordinate ...
-1
votes
1answer
29 views

Seeking vector file of extent of flood plain of 2010 Pakistan Floods?

I am looking to locate a shapefile or any vector file that can be used for analysis I am conducting of change in size of cropland in the Punjab region of Pakistan. The file of interest would reflect ...
-1
votes
1answer
42 views

If the .osm file encodes all geospatial data, or if Mapnik encodes part of it too [closed]

I have downloaded the whole OpenStreetMap .osm file, and not wanting to decompress it or try to open it in a text editor (at almost a terabyte in size), I am looking at this XML as an example: <?...
2
votes
1answer
223 views

How can I modify DEM elevation data within QGIS using a polygon?

How can I modify an existing DEM using a polygon? I have a DEM raster with terrain varying between 355 and 365 meters. I have a polygon I've drawn over the area. Ideally, I would like to uniformly ...
1
vote
1answer
78 views

Why do symbol categories disappear when unchecked in QGIS?

I am using Qgis 2.18.25 In a vector layer, when using the categorized style, when I uncheck a category the category disappears. Is there any way to avoid this behavior? Actually I do not really ...
3
votes
1answer
51 views

Replacing Multiple Polygon Geometry

I am carrying out a piece of work in ArcGIS 10.4.1 that involves realigning polygons to an updated vector map. The polygons in question are planning permission boundaries that are created showing the ...
3
votes
1answer
197 views

Batch distance calculation with v.net.distance

I have three shapefiles: one containing destinations the second containing postcodes the third containing the road network I want to calculate the distance between the postcodes and destinations ...
3
votes
1answer
715 views

Adding Properties to a feature in Google Earth Engine

Is there a way to add a property to a feature in the GEE. I know that you can edit existing properties with set(), but haven't found a way to add a property.
2
votes
1answer
32 views

Change unit in Split tool on ArcGIS Pro?

I'm working on a project with a CRS in meters, map units and display units are also in meters, but Split tool (from Modify features) is in feet: Is there a way to change unit to split based in a ...