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"

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Reorient points to certain degree [closed]

I have these pictures below that have different thicknesses: Green Points = design for the river area, Blue Points = I generated from Pixels to Points, Pink Points = from the Blue points but rotated ...
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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 => { ...
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30 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 ...
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1 vote
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32 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 ...
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3 votes
1 answer
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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 ...
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3 votes
2 answers
163 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 ...
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3 votes
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32 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 ...
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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 ...
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2 votes
1 answer
39 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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52 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 ...
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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 ...
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1 vote
2 answers
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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 ...
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1 vote
1 answer
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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 ...
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1 vote
1 answer
145 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 ...
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  • 135
1 vote
1 answer
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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
260 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 ...
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2 answers
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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 ...
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1 answer
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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 ...
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3 votes
1 answer
72 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 ...
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1 vote
1 answer
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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 ...
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1 vote
1 answer
97 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 ...
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1 answer
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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 ...
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1 vote
1 answer
31 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 ...
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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 ...
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4 votes
1 answer
89 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. ...
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0 votes
0 answers
57 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 ...
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2 votes
2 answers
699 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 ...
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1 vote
1 answer
316 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 ...
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1 vote
0 answers
25 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 ...
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29 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 ...
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60 views

Global Mapper - What are the Specific Steps for Generating a Grid of points inside a Polygon

Using Global Mapper 17, what are the precise steps for creating a point grid with regular rows and columns that fill an entire irregular polygon? Each polygon encloses a landform of interest and I am ...
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2 votes
0 answers
71 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 ...
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1 vote
1 answer
56 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' ...
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2 votes
1 answer
85 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 ...
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0 votes
0 answers
43 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 ...
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1 vote
1 answer
53 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 ...
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2 votes
2 answers
175 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 ...
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0 votes
1 answer
27 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 ...
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3 votes
1 answer
203 views

Converting grid corners from UTM to degrees, minutes, and second in QGIS

I have a shapefile of a 10km grid that is in UTM projection but I would like to convert all coordinates to Degrees, Minutes, and Seconds. The attribute table has corners (Top, Bottom, left, and right)....
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0 answers
45 views

Replace values by nearest value

I have a vectorised meteorological dataset containing both precipitation and temperature for variables. This has been merged with a larger polygon however I have some NULL values in the field for ...
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1 vote
0 answers
100 views

Spacing error when creating vector grid in QGIS

I'm trying to create a vector grid in relation to a commune's right-of-way with the "create a grid" tool in QGIS 3.16. I would like the grid to be created at a certain scale. In the tool ...
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1 vote
1 answer
123 views

QGIS 3.16 :Vector grid number generation

I would like to number my grid cells from Northwest to Southeast. I tested a formula in the field calculator found in this post: Vector grid id generation. But the problem is that I would like to have ...
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3 votes
2 answers
227 views

Calculating average data of neighbour grids based on location and returning data to grid in QGIS

I have generated a grid layer from a vector layer in QGIS, and merged the point attribute into the grid layer by "joint by location". I now need to: calculate the average of some ...
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1 vote
1 answer
73 views

Creating grid cell and associating to each row (point) by the cell id

I have the following data in CSV: latitude and longitude of the geolocation of violent events, where they occurred, which actors where implied, etc. Each row is a different event with a different ...
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3 votes
1 answer
327 views

Aligning rectangular grid with raster pixels in QGIS

I want to create a 1000m grid over a 1000m land cover map such that the grid cells are perfectly aligned with the raster pixel underneath. But when I use the Create Grid function in QGIS, the cells ...
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1 vote
2 answers
61 views

UTM grid layer in Garmin GPS

I would like to ask if someone could point me in the right direction. I need a UTM grid (1x1km) layer in Garmin handheld GPS, so the UTM grid would show on top of the map. The grid layer should be on/...
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40 views

Finding average value from polygon areas in fishnet cell based on lat/long of points using ArcGIS Pro

I have created a fishnet of 0.5x0.5degrees and wanted to know the average lat/long in each cell in ArcGIS Pro. How could I accomplish that?
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0 votes
1 answer
48 views

Joining polygons to points returns no rows?

I'm trying to join a 1000m fishnet grid to a layer of points, so that for each point I can find out which grid cell the point lies in. Both the grid and points layers are saved in a file Geodatabase. ...
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1 vote
0 answers
41 views

QGIS merging grid cells together changing resolution from 250x250m to 500x500m [closed]

I want to change the resolution of a grid in QGIS and can't make it work. I have checked the site for similar problems but couldn't find a simple and good solution. My Grid looks like this: and I ...
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1 vote
0 answers
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Using R to overlay a fine resolution grid on top of a coarse grid and for the fine grid to adopt the values from the coarse grid below

*When I refer to climatology here I am referring to a thirty year timeslice which is averaged monthly to produce a climatology (year of average data) for a specific variable. I have a high resolution '...
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