Questions tagged [vector-grid]
Use for questions about vector grids which are also known as fishnets
361
questions
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0answers
28 views
QGIS NTv2_SN.gsb
I want to integrate the NTv2_SN.gsb grid in QIGS. I have a dataset in CRS 3149 and want to transform into CRS 2588. Therefor I want to integrate the NTv2_SN.gsb into QGIS. But I have some problems.
I ...
0
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0answers
21 views
Displaying ArcGIS Online vector tile layer in Leaflet using Leaflet.VectorGrid Not displaying correctly
I have created a Vector Tile Package using ArcGIS Pro and uploaded it to ArcGIS Online. I am trying to load the layer into a leaflet map using the Leaflet.VectorGrid plugin. It successfully loads but ...
1
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0answers
19 views
Obtaining least number of grids (polygons) covering a separate polygon while the grids are overlapping
I have grids as polygons where the grids are overlapping. I want list of grids covering a separate polygon. The image below demonstrate the problem. The red lines are the edges of the grids and the ...
0
votes
1answer
43 views
Using ModelBuilder to create different layers by selecting all attributes that intersect each grid index cells
I have a large grid index layer and point layer. I want to use ModelBuilder that will select each cell in the grid index layer, then perform a select by location to select all the points within each ...
2
votes
2answers
72 views
Add Excel-style row_number and column_name attributes to a Grid Index in ArcGIS [closed]
After using the Grid Index Feature tool it creates a grid polygon layer. The resulting feature class contains a field called [PageName], which displays like A1, A2, A3...etc in each row starting from ...
5
votes
2answers
174 views
Creating grid following points in QGIS?
I am working with a set of coordinates from a csv file that creates a grid (of points) in QGIS. There is an id attribute along with the X and Y coordinates for each point.
I need to work with a ...
1
vote
0answers
19 views
Creating rotated local grid/fishnet in QGIS with known AMG origin & rotation angle?
I have a local grid with known origin that is in AMG (metres) and a rotation angle.
How do I establish that grid so that it can be projected into known CRS eg GDA94/ MGA Zone projection?
I located ...
2
votes
1answer
40 views
How to create polygons layer from datasheet in QGIS
I would like to create a polygon shp file from a large dataset. The header looks like this: "Name MINx MAXx MINy MAXy"
I expect the layer to look like a grid.
0
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0answers
15 views
Split height data based upon grid? (Same as Create Grid, Intersection, Split Data for Vector)
I have vector data for a large area that I have split into 2km x 2km layers using Create Grid, Intersection, and split, within the vector menu. I've downloaded STRM data for the whole area. I'd like ...
0
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0answers
31 views
Using interactive inputs to Create Fishnet using ModelBuilder?
I'm creating a fully automatic tool in ModelBuilder, and have a problem with the Fishnet function.
The tool should work with different files, and the user only needs to choose a specific txt file (...
1
vote
1answer
49 views
Create fake clustered raster data in ArcGIS [closed]
I'd like to create several polygon grids with fake species occurrence (see example image)
where each grid cell has a random value between 0 and 5 but high and low values cluster in certain areas as ...
2
votes
1answer
35 views
How to get the type of the largest polygon inside a grid cell?
(1) I have a vector grid layer.
(2) I have a multipolygon layer. Each polygon has a specific type (in this case a vegatation type)
Now I want to get as an output the grid layer where each cell ...
0
votes
1answer
53 views
Draw a spatial grid with the lat/longs at the center of the grid using R
I looked through multiple posts on the same, and most of them end up drawing a grid connnecting the points or a grid connecting the bounding box of the coordinates.
I need a grid with each of these ...
0
votes
1answer
51 views
Dividing country into maps of scale 1:25000 (metres)?
I want to divide a country into a grid of maps that will be of 1:25000 scale. I am not sure how to approach this. Create fishnet seems like a good ending point. I have some old maps of the given scale....
1
vote
2answers
31 views
Check if two different class points fall within the same cell of a grid?
I am very new to R and GIS and statistics. I'm trying to find out if two set of points of different class (ie. species) that I have are aggregated or seggregated. For that I need to randomize the ...
2
votes
1answer
36 views
Selecting points within fishnet grid cell with criteria of at least 3 unique values using ArcGIS Desktop?
My goal is to create a raster from points with values based on at least 3 unique IDs within a cell. Cells that had fewer than 3 points with unique IDs will have value NA. See below for clarification. ...
0
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0answers
22 views
Create a grid in QGIS [duplicate]
I have GIS points (x, y data) for every minute over a landscape. If I load them up as a CSV into QGIS they all show up as points, which you would expect. However, what I would like to do is use these ...
1
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1answer
35 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 ...
0
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0answers
52 views
Population calculation per grid using QGIS?
I have a ward map of a city along with the population in each ward. I have divided the map into 1 km* 1 km grids.
How do I calculate the population per grid, taking into account that there can be ...
2
votes
1answer
144 views
Access geometry.coordinates of sliced vector grid
I am trying to represent LineString GeoJSON as vector tile layer using Leaflet.VectorGrid.
But i need to do some interactive by clicking on vector tile layer.
but this vector tile layer has came with ...
2
votes
3answers
68 views
Sum up values of neighboring polygons in ArcGIS
My question is very similar to Summing up values of neighbouring polygons using QGIS?. However, I would like to be able to perform the analysis within ArcGIS Desktop if possible.
What I would like to ...
1
vote
0answers
22 views
Calculating areas and joining attributes between overlapping features
I am working with QGIS 3.4.8 and Python 3.6.8 on OSX El Capitan 10.11.6.
I have two shapefilea, one which is a grid of cells (each cell a feature) and the other one which is urban settlements as ...
0
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0answers
29 views
Selecting grid squares (polygons) that intersect with a raster
I have a raster dataset that I have exported a subset from using attribute values (so the extract has areas where there are no pixels). I also have a fishnet grid (polygons) and I want to select the ...
1
vote
2answers
69 views
Shanon diversity index in QGIS
I'm trying to calculate Shannon diversity index for trees in a urban context.
I have the following attribute table which I got joining attributes by location between a vector points and a vector grid. ...
1
vote
0answers
23 views
Fitting a grid to a research plot
I am trying to create a grid to use for zonal stats for a ag research plot. I have created some grids and rotated them and am getting decent fittings but I feel that there must be some other better ...
0
votes
1answer
33 views
How is IDW raster formed?
IDW algorithm says that it makes a grid and assigns value to each point in grid depending on the distance of separation. From this definition, it looks like the output is set of equally spaced points. ...
3
votes
1answer
76 views
Vector grid in QGIS3 - Can I change the order of row number?
When creating a grid (e.g. dx=15,dy=20) in GQIS 3 the first cell begins from the upper left corner and continues to the bottom of the grid as shown in the picture below.
Is there any way to define ...
2
votes
1answer
52 views
Merging two neighboring cells in grid of type SpatialPolygonsDataFrame?
I have a grid of type SpatialPolygonsDataFrame (each cell has a set of data attributes). I want to merge each cell which has a surface < X with one of its neighbours. An example is depicted in the ...
1
vote
0answers
82 views
QGIS: creating a grid over a canvas with 50m by 50m edges
I know I can overlay a grid on my canvas by going to view -> decorations -> grid.
However, I want to overlay a box grid that is 50 by 50 meters. Is there a way to specify this?
CRS: WGS 84 ...
-1
votes
1answer
119 views
Creating 100m^2 grid automatically using QGIS?
I need help on how to create a grid structure over my data set with each box being 100m^2.
That isn't manually doing it so I can calculate the features within each box?
0
votes
1answer
26 views
Drawing polygons with specific heights and widths in ArcGIS Desktop?
I have a dataset that defines my plot corners. Within each plot, there are a number of subplots, each with specific dimensions. I need to create polygon shapefiles for each of the subplots.
Is there ...
0
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0answers
95 views
Create a SVG layer for Leaflet from GeoJSON
I had a large GeoJSON and I display it with vectorgrid plugin for Leaflet. I want to add another layer based on the main GeoJSON with only the name of the building and display it in vector format (not ...
1
vote
0answers
60 views
Create 3mx3m Vector Grid on Worldmap with equirectangular projection in QGIS [closed]
I would like to create a 3meter x 3meter Raster Grid on a Worldmap in QGIS. I am fairly new to the whole topic but I have found out that the equirectangular projection should be the most accurate, ...
0
votes
1answer
66 views
Create a 5x5 km polygon grid by sub-setting a 10x10km one
I have a 10x10km grid in Lambert Conformal Conical projection (consider it as a sample frame).
I want to create another grid 5x5km by splitting in 4 parts each one of the original grid cells (the ...
1
vote
1answer
59 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
100 views
Grid spacing by attributes, QGIS
Is it possible to define point grid spacing by attribute in QGIS?
EDIT: I really dunno is this even possible. Added a picture where I try to demonstrate the situation.
So the problem is that I want ...
2
votes
2answers
95 views
Calculate cell distance between cells
I want to calculate the cell distances between all cells within a feature class grid. Exactly the same as the game Minesweeper. I have included an example below. The original data contains 11000 cells ...
0
votes
1answer
27 views
Polygon to Raster produces misaligned raster even at same resolution using ArcGIS Desktop?
In first image is a fishnet polygon. Using 'Polygon to Raster' tool, at SAME CELL SIZE of fishnet. I get image 2 (only few pixel shown to highlight misalignment).
Is it possible to convert to raster ...
1
vote
2answers
43 views
Linear fishnet grid over layer with latlong coordinates in QGIS
In QGIS I have a city boundary layer which I want to transform into a simple fishnet grid with 30m spacing. The boundary layer is in geographic degrees and the only solution I found so far is choosing ...
0
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0answers
137 views
Exporting a grid to KMZ with legend (QGIS 3)
I am stuck trying to export a grid with values to a KMZ file with a legend that can be viewed in Google Earth Pro.
This is the grid I'm trying to export (it is in EPSG 32756)
This is how I need the ...
3
votes
1answer
72 views
Showing only outer Fishnet boundaries
I have a fishnet layer where some empty cells are nested within. I'd like to only show the boundary of the filled cells (color set no fill, but no inner cell boundaries of adjacent cells). How can I ...
1
vote
0answers
186 views
How to create one grid from specific set of points using QGIS?
I need to create one grid/fishnet from a set of points (coordinates). I tried to do it with the point to path tool following this three steps:
1-Vertical's rows: I numbered the points in the ...
0
votes
1answer
34 views
Choosing number of points in Create Fishnet using ModelBuilder? [duplicate]
Is there a way of getting the analysis "create fishnet" to generate a grid of x number of points in ModelBuilder?
For example, I wish to generate a grid consisting of for example 80 points within a ...
1
vote
0answers
133 views
Vector Grid shows big difference between cartesian and ellipsoid measurement
I am using QGIS 3.4.1 on Windows 10. Project CRS is EPSG:3857 (WGS 84/Pseudo-Mercator).
I have defined a vector grid. Type is Rectangle (polygon). Horizontal and vertical distance is 50 m. Overlay is ...
4
votes
0answers
103 views
Showing Polar coordinate grid?
I've found some maps for Antarctica https://nga.maps.arcgis.com/home/webmap/viewer.html
How can I show polar coordinate grid for it?
I've got the grid source code in grid_wgs.js (I use OpenSeaMap ...
1
vote
0answers
25 views
Calculating route length per grid cell using fishnet
I have a problem determining the length of the routes (boat) I've surveyed in order to calculate the survey effort. I added the GPS points of the boat and then used the points to line tool and added a ...
2
votes
2answers
40 views
Labeling cells in fishnet using equivalent (“southeast”) vertices in grid using ArcGIS Desktop?
I have a large grid of 0.001-degree fishnet cells. I want to label each cell using the coordinates of its own southeast vertex.
I have the coordinates for all the vertices in the entire grid, but I ...
0
votes
1answer
33 views
Expanding Grids in the border in ArcMap
I have a shapefile of a city. My problem is that in the border, cells of the grids are not a complete square (500*500 m), while I need them to be complete as I need their centroids too. As it is shown ...
1
vote
1answer
348 views
Can't display vector layer using L.vectorGrid.protobuf
I use mapbox/tippecanoe to create .pbf tiles.
But when I try to display them using L.vectorGrid.protobuf nothing is rendered, although I see that proper .pbf files are requested and downloaded by ...
1
vote
0answers
40 views
Different variations of point-to-zone mapping
I have created a grid of 1Km2 over some census zones. Now, for each cell of the grid, I need to provide some characterization of it: population, socio-econ, etc. coming from the census zones.
So, ...
