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"
516
questions
2
votes
1
answer
28
views
Calculate the minimum distance of a point grid from the nearest point of another layer with QGIS
I have a grid of 1 km points and a separate group of points representing RTK stations. (See image 1)
I want to create a 3rd value for the grid points that is proportional to the nearest reference ...
- 23
0
votes
0
answers
20
views
Fetching WFS layer grid of 1*1 mtr from GeoServer
I have created 1*1 grid in QGIS from Vector->Research tools->Create grid. And I have converted that grid file to shape and hosted in the GeoServer. When I am trying to fetch that layer after ...
- 271
0
votes
0
answers
32
views
Rotate a fishnet in ArcGIS
I have created a fishnet of sampling points within the area defined by the polygon shown below 1. The grid is unrotated but I want to rotate it so the lines of points run parallel to the length of the ...
5
votes
1
answer
113
views
Create biggest possible rectangular polygon from grids in QGIS
I am working in QGIS (Modeler with some Python scripting) and I have troubles performing the following task:
I have the following grid:
I have to create the biggest possible rectangle polygon out of ...
- 63
0
votes
1
answer
87
views
Plotting N number of grid points inside a polygon/shapefile Python [duplicate]
I have a shapefile of a region. I want to put N number of grid points on that shapefile and create a new layer(shapefile) with all grid points as we do in QGIS. But instead I want to do it in Python. ...
- 21
3
votes
1
answer
74
views
Generating horizontally ordered ids for irregular grid
How can I generate ids for an irregular shaped grid that increase from west to east and north to south (left to right, top to bottom)?
I've tried using this example and it almost works, but it does ...
- 121
0
votes
0
answers
15
views
Reversing count data to provide individual values against each grid cell ID in raster attribute table
I have overlayed my raster layer with a grid polygon using zonal statistics with the hope that each grid cell provides an average rating from my raster layer.
However, my attribute data provides me ...
- 21
1
vote
1
answer
37
views
Calculate polygon area in vector grid QGIS
I have a polygon layer in QGIS (building outlines) and I made a grid over this layer using the MMQGIS function. I want to calculate the area of the building outlines in each grid cell (so it becomes ...
- 57
0
votes
0
answers
21
views
How to use 1km2 or 10km2 vector grid to classify urban areas in a population grid raster data?
I have:
A population density grid raster file converted to point shapefile.
And a vector grid and used zonal statistics to estimate the total population in each grid cell.
I want to mask out or ...
0
votes
1
answer
148
views
How to create a regular grid with varying cell sizes for anonymising point data (ideally in Python/GeoPandas) [closed]
I have some point data that represents households and I would like to anonymise them so that you can't see which particular house a point relates to, but you can still know rougly where the house is.
...
0
votes
1
answer
30
views
Converting LULC into fishnet using ArcMap
I am using ArcMap.
I have a LULC and I want to create a fishnet-based LULC out of it. This way, I want to do a grid-based analysis.
Is there any automatic way to do this?
My LULC is a high-resolution ...
- 3
2
votes
1
answer
52
views
Dividing square into smaller squares by using their shapes rather than their bounding boxes in R
I want to divide a square into 25 smaller squares. The square layer has a UTM coordinate system, so when plotted, it doesn't have flat bottoms and tops. When I try st_make_grid() function to overlay a ...
- 55
-1
votes
1
answer
40
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
1
vote
0
answers
89
views
Get GeoJSON from a VectorGrid.Protobuf layer on click event
I am trying to get the GeoJSON of a VectorGrid layer on a click event.
Something like this:
...
var vectorTile = new L.vectorGrid.protobuf(url, options).addTo(map)
vectorTile.on('click', e => {
...
- 11
0
votes
0
answers
153
views
Creating a point density map using a hexagonal grid in ArcGIS pro
I am looking to create a hexagonal grid that contains three different area sizes (5m, 10m, and 100m) that covers a very large area. Each of the different area sizes will only be visible at large ...
1
vote
0
answers
49
views
PyQGIS creating grid layer using extracted extent and rounding up/down
I have the following code that is meant to extract the extent of a raster, and round the extents up or down to the nearest 10000, then create a vector grid using this rounded extent at 10,000m spacing
...
- 438
3
votes
1
answer
79
views
Scaling polygons in vector grid around polygon centers in QGIS
I have a aerial image with a vector grid overlaid in QGIS. Is it possible to scale the individual polygons (scale all of them by the same size) around their individual centroids? For example, to cut ...
- 71
3
votes
2
answers
182
views
How to identify all species observed in each cell of a research grid
I have created a grid map as a shapefile. I have added a point layer that includes “species name”, coordinates and etc. I put a part of it below.
Now, My problem is, when I use “count points in ...
- 59
3
votes
0
answers
48
views
Create new grid based on another grid (shapefile) in QGIS
I have an shapefile of the historic grid Messtischblatt which is a CRS formerly used in Germany for the topographic map at a scale of 1:25,000. The CRS is OGC:CRS84 - WGS 84 (CRS84)
I want to further ...
- 31
0
votes
0
answers
70
views
Creating sequential polygon based on spatial points location using QGIS
I have a challenge to create an automatic vector grid using QGIS.
The scenario is that I have a points layer which has more than 600 features. If possible I need to generate a sequential vector grid ...
- 1,095
2
votes
1
answer
74
views
Project Point to Line on grid
I'm using QGIS 3.22 and I need some help.
I have a lots of points to move and I would like to find an automatic way of doing it. I have a shapefile of points (Dark Green) on a grid, and I want to move ...
- 21
2
votes
1
answer
40
views
Calculating percentage of certain point type over rest inside grid using QGIS
I have a layer of polygons which represent types of uses for a city, let's name it USES_POLYGONS. Think of a street: every building will have N number of polygons and each polygon will have a colour ...
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1
vote
0
answers
53
views
QGIS unable to get correct fishnet cell centroids for United States
I want to create a fishnet grid across the United States with cells sizes of 10km x 10km in QGIS. I then want to pull the coordinates of the centroid of each cell. I have done a similar thing with ...
- 65
0
votes
1
answer
42
views
Writing extent of each grid cell in fishnet to its attribute table using ArcMap
I have generated a grid (polygons 1000x1000m) using Fishnet in ArcGIS 10.8. I am intending to add top left and bottom right coordinates of each grid cell in respective fields I have added in the ...
- 1,151
1
vote
2
answers
50
views
QGIS - Create evenly distributed boundaries using multiple points as the source
I've got series of coordinates that are the centroids and I am wondering if it's possible to create a grid polygon if their boundaries are less about distance and more about spacing evenly between the ...
- 133
1
vote
1
answer
50
views
Snapping grid to a point
I am trying to snap the edge of a grid to a point (red point). I drew my grid with the correct dimensions, but how can I align the top left of my grid to my point/a set of coordinates? I am using QGis ...
2
votes
1
answer
314
views
Search possibility to display filtered data with Leaflet.VectorGrid
I use Leaflet and Vectorgrid and I can display markers on the map.
I have a geojson file of around 42 000 markers of places in Morocco and I would like to filter it to display only markers with a ...
- 175
1
vote
1
answer
60
views
Aggregate Fishnet's Cells into 10 cells by 10 cells grid
How can I generate an ID variable taking a different value for each 10 cells by 10 cells group in a raster?
Below is my code, built from this example.
In this example, each cell get an id (i.e., the ...
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-6
votes
2
answers
344
views
Measured grid in Mapbox
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 ...
- 35
1
vote
2
answers
246
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
1
answer
180
views
Why do results for Grid Index Features tool in ArcMap and ArcGIS Pro differ?
I'm trying to create grids for an area using the Grid Index Features tool in ArcGIS Pro. The grids should be a specific width and height and cover the given area. I've created a shapefile for the ...
3
votes
1
answer
125
views
Joining a very large raster and shapefile in QGIS
I am using a very detailed 30 m x 30 m raster on deforestation (found here: https://storage.googleapis.com/earthenginepartners-hansen/GFC-2020-v1.8/download.html), I want to do all my analysis at this ...
- 31
1
vote
1
answer
85
views
Creating rectangles from global point data of approximately consistent size in EPSG:3857 using QGIS
I have a point layer of global city locations taken from the Esri data here:
https://www.arcgis.com/home/item.html?id=6996f03a1b364dbab4008d99380370ed
I'm trying to create a rectangular bounding box ...
- 33
1
vote
1
answer
209
views
Create density map with grid
I want to create a map as shown in the image, where every grid cell shows the number of points (from a point shape layer) that are within a grid cell. The number of points in a grid cell shall be ...
- 67
0
votes
1
answer
65
views
Importing vector grid of a country from QGIS in python [closed]
I created a vector grid over a certain country (EPSG:4326) with a size of 20kmx20km (spacing) in QGIS. I want to work with this layer using Python with below goals:
I have pairwise locations in a ...
- 1
2
votes
1
answer
40
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 ...
- 3,531
0
votes
1
answer
64
views
How to export a grid layer to google earth as boxes
I have a grid made using MMQGIS which I want to label box-wise (custom and non-consecutively) and export to kml to use in Google Earth using the same labelled boxes. If I export kml normally I get ...
- 65
4
votes
1
answer
129
views
Choosing appropriate index for PostGIS data
I have been reading this blog by Paul Ramsey, and considering my own data.
https://blog.crunchydata.com/blog/the-many-spatial-indexes-of-postgis
I have a regular grid covering an area of the world. ...
- 419
0
votes
0
answers
83
views
Creating fishnet across different UTM zones of USA
I am trying to create fishnet across the USA. In the end, I want to calculate summary statistics for the vegetation in each grid, as well as get the distance between the each cell's centroid and the ...
- 361
2
votes
2
answers
1k
views
Creating polygon grid from point grid using Geopandas
I have a grid of points, that look something like this, the points represent the bottom left corner of an area and I want to retrieve that grid. I've tried doing this and it's not working, the ...
- 187
1
vote
1
answer
608
views
Styling Points of Vector Grid in Leaflet
I am using the Leaflet Vector Grid Plugin to load a geojson innto my Leaflet project. But I can't figure out how to implement a popup and style the data by attributes.
I load up the data with ...
- 305
1
vote
0
answers
26
views
Geodetically correct point spacing accounting for change in elevation
I am trying to create a grid of points at a specific spacing (30ft) for setting up a new orchard on fairly steep terrain. I have tried using "create fishnet" in ArcGIS pro. This is giving ...
- 19
0
votes
0
answers
31
views
Converting fishnet polygons into CSV using ArcMap
I am working on C factor of RUSLE model for a watershed. The objective is to take fortnightly data of the watershed and plot the NDVI values on a graph such that I can estimate the Vegetation cover ...
- 1
2
votes
0
answers
125
views
Tiling a polygon into relatively even squares?
I have a polygon that I would like to cut into even tiles that are around 100 x 100 m (it doesn't have to be perfect). I found the ee.Geometry.Polygon.cutLines() method, but when I use it nothing ...
- 283
1
vote
1
answer
58
views
Correct terminology to describe regular grid
What is the correct terminology to describe a regular grid of squares based on certain distance in latitude/longitude? I came up with this description:
We used regular grid of squares measuring 10' ...
- 1,113
2
votes
1
answer
134
views
Numbering grid cells using ABC & 123 in QGIS
I'm trying to number a grid from 120 rows by 120 columns: horizontal ABC, vertical 123 using Algorithm ID: 'native:creategrid' and
Algorithm ID: 'QgisregularPoint'.
Numbering vertically isn't a ...
- 111
0
votes
0
answers
58
views
QGIS/Create-Grid/Calculate-extent-by-layer: Cannot select layers as number of layers exceeds layer-selection-window size and scrolling is not possible
I'm using QGIS 3.16 on Win 10. My project contains say hundreds of raster layers and I'd like to create some vector-grids based on distinct rasterlayers by using the Create-Grid-tool with the ...
- 447
1
vote
1
answer
80
views
Irish Grid 100km Shapefile
Does anyone know where I can get a shapefile (or similar) for the 100km Irish grid?
I cannot seem to find one anywhere. https://en.wikipedia.org/wiki/Irish_grid_reference_system. Ordnance Survey ...
- 185
2
votes
2
answers
361
views
Creating grid in QGIS 3.18.3
How do I draw a grid of n by n on the shapefile of a city with a CRS of EPSG:4326?
I have tried creating gird in ESPG:32735
I have created a grid using this.
Vector -> Research Tools -> Vector ...
- 121
0
votes
1
answer
80
views
Creating 30 arc-second polygon grid on Earth Engine
In ArcGIS you can do this with Data Reviewer > Create Polygon Grid Wizard. Is there an equivalent tool on Earth Engine?
I'm hoping to repeat a function over each square kilometer to create a ...
- 51