Questions tagged [vector-grid]

Use for questions about vector grids which are also known as fishnets. For questions about the Leaflet Plugin please use the tag "vector-tiles"

Filter by
Sorted by
Tagged with
0
votes
0answers
31 views

Calculate Percentage population from Vector Grids

I have a vector grids layer of population (shapefile). Each grid represents population in that grid and have the following attributes: Area Population I want to calculate and display the percentages ...
0
votes
1answer
25 views

Different number of grid cells between years when using a grid layer to look at area of land cover change over time

My goal is to calculate the area of mangrove cover (vector layer) per grid cell (vector layer) over time (yearly), to determine land cover change. I have tried two ways so far. Initially I wanted to ...
1
vote
1answer
11 views

Assign coordinates to grid-cell in QGIS

I've created a grid using make grid in QGIS. The type of grid is rectangular (polygon) and it's 0,1 x 0,1 decimal degrees. I now want to assign an X and Y coordinate to the centre of each grid. Would ...
0
votes
1answer
33 views

Matching points to grid-cells - using join attributes by location

I have point data in a shapefile covering most of Africa. I've made 0.1x0.1 grids using the make grid option from QGIS and now I want to link the grid_id to my point data. Below you will find a ...
-1
votes
1answer
23 views

Cannot run “Create Fishnet” tool in ArcPy

I've been trying to run an ArcPy code which creates a fishnet for sampling. Everything in the code works fine, but when it gets to arcpy.CreateFishnet_management(), it stops running. I've already ...
-1
votes
0answers
25 views

Creating fishnet in GCS projection using ArcMap

I have earlier created a fishnet in Projected Coordinate System with a dimension of 300 m* 300 m. Now I want to create the same but in Geographic Coordinate System? I want to ask specifically ...
1
vote
0answers
28 views

Turn a grid an place

I have a grid over a rasterlayer and a second a line .file. I want to place the grid paralell to the line shape or dock it on the shape file. I tried it with turning the grid manually, but it takes ...
2
votes
1answer
1k views

Splitting all polygon features in a shapefile into smaller equal width polygons

I have a shapefile of thousands of polygon features, that i would like to break up into smaller pieces (i.e. break a square into 8 equal pieces). I have read all over these boards for the right ...
1
vote
1answer
57 views

Slow processing in ArcMap

I am working with the vector files: Landuse classification shapefile for a certain area with 4 landuse categories - builtup, vegetation, water and open spaces. (area bounds = 95sqkm). I classified a ...
0
votes
1answer
26 views

Make fishnet visible but not snappable [closed]

I'm currently using a polyline fishnet grid to use as a guide when labelling land features. For example, I aim to label 10 grids per day. An issue I have is that when creating my polygons they keep ...
2
votes
2answers
39 views

QGIS 3.12 print composer - how to rotate map but keep grid unrotated?

I am creating a map using QGIS 3.12 and wish to rotate the map and add a grid using print composer, but I want to keep the grid unrotated. Is this possible or does the grid only rotate with the map?
0
votes
1answer
41 views

Preventing ArcMap from labeling when creating grids?

I am using the Create Polygon Grid Wizard to make a large number of grids. Is there anyway I can stop ArcMap from drawing the grid labels as they are created? It seems to take much much longer to ...
1
vote
1answer
25 views

Getting polygons out of .shp

I have a shapefile with lines. In the attributes of the line shapefile I have known coordinates. I want to get polygons out of these points which reach to the next line. As a goal I want a grid out ...
1
vote
0answers
52 views

Converting a 2x2km point grid to a coincident 1x1km grid

I needed to convert a 2x2km point grid (specifically the LUCAS grid) into a coincident 1x1km grid. Is there a "simple" way of doing this in QGIS?
2
votes
1answer
46 views

Vector grid id generation [duplicate]

I generated a grid with 300m spacing but the ids generated from top to bottom in sequential oder. How could I get in horizontal from left to right sequence.
1
vote
1answer
71 views

Dividing up vector grid and scoring cells using QGIS?

I have a map of an area, have created a vector grid over this, and want to score different areas of the map by risk (high risk, medium risk, low risk), by scoring each cell. I want to define these ...
5
votes
1answer
234 views

Integrating NTv2_SN.gsb grid in QGIS

I want to integrate the NTv2_SN.gsb grid in QGIS. I have a dataset in CRS EPSG:31469 and want to transform into CRS EPSG:25833. Therefore I want to integrate the NTv2_SN.gsb into QGIS. But I have some ...
1
vote
1answer
38 views

Rotate Data for Gridding

I have sample data that was collected in lines. I would like to rotate the data to North-South so that I can rasterize it, then back to the original NAD83 Zone Projection where it's situated at an ...
9
votes
2answers
11k views

Creating polygon grid using Geopandas

I'm working with a geodataframe of points and I need to create a grid of rectangular polygons. I know how to have bounds of the geodataframe with gdf.geometry.bounds. Now using this information and ...
0
votes
1answer
39 views

How to display 1,000,000 fishnet polygons in ArcMap?

I am working on ArcMap. I have created a fishnet with 1,000,000 polygons for pixels of size 0.125 degree. I would like to display the map for a variable that varies across cells. I tried symbology and ...
0
votes
2answers
25 views

How to join maximum values from a polygons layer to other gridded polygons layer in QGIS?

I have two overlapping SHPs. One is with two noncontinous polygons - values 0 is blue and 1 is green. Now I have 9 meters grid for the same area, but I need to "fill" the grid with values from ...
0
votes
1answer
58 views

QGIS fishnet problem

I have create a grid in QGIS. But I don't have coordinates, I would like to sketch on the basis of Google satelitte, that uses Pseudo Mercator projection. I tried GRASS mkgrid, but something went ...
0
votes
1answer
30 views

Non-random sampling of point vector layer in QGIS

I have a point vector layer with 47.000.000 points representing elevation. It is a regular grid with constant spacing. I aim for rasterization but it is very slow. I know how to do random sampling but ...
0
votes
2answers
720 views

QGIS regular points around each polygon in a layer

I have a number of buffered points (somewhere polygons intersect & are dissolved. I'd like to create regular spaced points grid around EACH polygon -- not ALL polygons. When I do Vector -> ...
0
votes
0answers
4 views

Why would the Extract Multi to Points not extract values to all points when the raster and the point clearly overlay?

I have four rasters and a point feature that all live in the same file geodatabase and have the same CRS. The point feature covers a large area. See image below: The rasters which values I wish to ...
2
votes
1answer
52 views

How to calculate how many grid squares a line shapefile covers

I have a load of transect data (in the form of a line shapefile) covering a very large area (approx. 11,900km2) that has been split into 20m x 20m grid squares on QGIS using: "Vector -> Research ...
1
vote
1answer
37 views

Joining each grid cells with many records in QGIS

I have a grid (10 x 10 km) where each cell is identified by a code a shapefile, a point layer, with the year when each point was sampled as shown in the figure below. As you can see from the image ...
0
votes
1answer
22 views

Expanding existing point grid to cover larger area in ArcGIS Desktop

I am looking to expand the already existing point grid system to encompass the entire polygon pictured below without changing the existing point locations or label features. Is there a tool in ...
0
votes
0answers
38 views

Leaflet poor performance on pbf animation

I am trying to animate different tilesets for precipitation data on leaflet map. I create layers upfront for next and previous timestamps. I have done the similar logic using MapBox and animation and ...
4
votes
1answer
84 views

QGIS refFunctions override maximum amount of features

A have a polygongrid on a 1x1m spacing. I have multiple XYZ files also on a 1x1 grid. I would like to write the Z-value of the xyz-files (is in geometry and in the DB) to the polygongrid if the XY of ...
0
votes
1answer
31 views

QGIS sum up polygon features inside grid

I have a grid with population points inside each of the individual cells. I've used the "join attributes by location" tool to join each population point to their respective cell. Now I'd like to sum ...
3
votes
4answers
2k views

Vector Grid Layer on QGIS

In QGIS, I'm trying to create a vector grid layer with cells 150m x 150m, yet it only seems to be possible in degrees. Is there a setting I need to change, or is there an equivalence I can use to ...
1
vote
1answer
89 views

ST_Area(geometry) with ogrinfo estimates a stable area per grid cell

I use ST_area(geometry) in order to calculate the area of each grid cell of a vector grid with LCC projection and 6x6km2 resolution. The CRS of the vector is: +proj=lcc +lat_1=45 +lat_2=22 +lat_0=38.7 ...
1
vote
1answer
91 views

Creating a Grid in QGIS of with 1meter intervals [duplicate]

I need to create a grid over my QGIS shapefile, with 1m intervals. I know the procedure of creating the grid; view -> decorations -> grid My question is, what is the x and y intervals that I need to ...
0
votes
1answer
30 views

Getting grid data to a CSV file

I have a road shapefile of a selected area of 1km x 1km created in QGIS. I have also been able to create a grid shapefile of 1m x 1m intervals over my area as below: - Is there a possibility to get ...
2
votes
1answer
40 views

Create within-country grids for multiple countries at once in Google Earth Engine

I have a dataset on countries in sub-Saharan Africa (which is set so that anybody can use it): var SSA = ee.FeatureCollection('users/salem043/Africa_Districts') .select("ADM0") I would like to ...
0
votes
1answer
402 views

Sorting grid cells in fishnet grid by location and number using QGIS?

I am using QGIS 3.2.0 on a Mac (and also have QGIS 2), and I have a fishnet grid (probably created in Arc) that comprises of nearly 2 million grid cells. As a result, every change I make to the ...
9
votes
4answers
15k views

Creating square grid polygon shapefile with Python?

I have the following coordinates minx, maxx, miny ,maxy = 448262.080078, 450360.750122, 6262492.020081, 6262938.950073 I wish to create a square grid of size 1 m using python. import math minx,...
4
votes
3answers
74 views

Create a new grid layer from a CSV, given the four corner coordinates

I'm trying to add a new grid layer by importing it from a CVS file. In the CSV, each line represents a grid, and the coordinates of the four corners are given. Moreover, the grid contains its own ...
0
votes
0answers
36 views

Join attribute by location giving bigger results QGIS

I have created a grid over South Africa, each cell being 10 km x 10 km. In addition, I have a raster layer that has been polygonized, each polygon containing a population count. The total of these ...
1
vote
1answer
112 views

Automating select polygons by distance within same layer using QGIS?

I have say, 6,000 polygons roughly 25 acres each, all touching one another, basically a grid but with irregular shapes. Using QGIS, how do I start with one shape then in an automated process, select ...
1
vote
1answer
46 views

How to convert a QGIS Composer Grid to polygons

I really like the cartographic aesthetics of the QGIS 3.10 Composer Grid, especially the border created by using the "Zebra" style and "Fit Segment Length" option. Because of its design, I'd like to ...
2
votes
4answers
2k views

Looking for a fine U.S. Latitude and Longitude grid (0.25, 0.5 degree)

There is a global latitude and longitude grid data available at 1 degree resolution and higher (http://www.arcgis.com/home/item.html?id=f11bcdc5d484400fa926dcce68de3df7). Is anyone aware of a finer ...
2
votes
0answers
53 views

Point grid in QGIS

I'm working on a project that needs me to map out a point grid for drilling work. The grid needs to fall within an already created polygon and be spaced 30x35meters. I was able to overlay a pointgrid ...
3
votes
1answer
78 views

Counting MODIS burned area pixels inside a grid in GEE

I am using MCD64A1.006 MODIS Burned Area Monthly Global 500m product in GEE and trying to count the number of pixels with a value inside of each grid cell in a vector grid I created. // load MCD64A1 ...
0
votes
0answers
30 views

Create Fishnet issues with measurement distance

I am trying to create a regular soil sampling grid based upon digitised field extents. I had posted a previous question today relating to issues with coordinate systems and displaying the sample ...
0
votes
0answers
40 views

SAGA error running “Raster values to points” (“shapes_grid” library)

I am using QGIS 3.10 and I want to generate a "fishnet" shape coincident with the pixels in a raster. I've done this before (in QGIS 3.4) using the "Raster values to points" SAGA tool ("shapes_grid" ...
2
votes
1answer
199 views

How to create a GRID with customized Labels in QGIS

I would like to know how can I create a GRID layer with customized labels as you can see in the image below: I have searched this topic here: Creating indexed vector grid in QGIS? QGIS Python ...
0
votes
1answer
296 views

Grid polygon generation by converting meter to degree using Python

When given a shapefile as below as an Input, I would like to generate a 100x100 meter polygon grid using python. I went through Creating a regular polygon grid over a spatial extent, rotated by a ...
3
votes
1answer
73 views

QGIS under measuring distances

I want to create some transects and a grid with specific lengths, but I realized Qgis is under measuring distances. For the transects I used "Advanced digitizing" (100m lines) and for the grid I used "...

1
2 3 4 5
9