Questions tagged [vector-grid]
Use for questions about vector grids which are also known as fishnets
1
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1answer
42 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
57 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
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0answers
16 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
votes
0answers
17 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
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2answers
55 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
19 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
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1answer
29 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
56 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
0answers
43 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
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0answers
38 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
87 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
23 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
57 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
44 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
46 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
49 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
75 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
78 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
20 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
39 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
votes
0answers
81 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 ...
2
votes
1answer
68 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
128 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
28 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
67 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
74 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
22 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
32 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
28 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 ...
0
votes
1answer
239 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, ...
0
votes
1answer
155 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 ...
2
votes
1answer
67 views
Speed up Geotools Vector Grid processing
I am using Geotools Vector Grid on a FeatureSource (shapefile) that been projected to "AUTO:42001". Units for the map are then in one meter increments. When the FeatureSource is a large country (like ...
2
votes
1answer
74 views
Find the NW vertex of a polygon
I am using QGIS 2.18 and I am wondering how to find the NW corner of a polygon and create an attribute of that point number. See the attached image.
For example, please node 8 is the NW corner for ...
1
vote
0answers
28 views
Troubleshooting creation of equal-area fishnet inside rectangular polygon
I have a set of polygons that are rectangles (10 km by 1 km dimension), and I'm using Fishnet to create smaller polygons (which I'll call "boxes"). The boxes need to be equal area, so I am working in ...
2
votes
1answer
75 views
Creating time-space map by distorting city-points polygons using QGIS?
I've already 3 main layers on shp in qgis: the points of some places, the cities polygons and a grid of 10km, as you can see on the image. I would like to distort the map using time values to modify ...
4
votes
1answer
345 views
Turning vector grid into individual shapefiles using QGIS?
I am using QGIS and I created a vector grid on a crop field in order to cut it into plots. I want to save each grid cell into individual polygon shapefiles automatically.
Here is an example of a ...
0
votes
0answers
28 views
MapInfo Printing Grid with Index
In Mapinfo Pro v17, how can I create a Map Grid with an Index (A1,B2, C3 etc) of a large area and generate a Map Series (Zoomed into the section for each region of the grid)?
I have looked at ...
1
vote
1answer
232 views
Attribute Error: 'unicode' object has no attribute 'extent'
I keep getting this error from this line.
arcpy.CreateFishnet_management(os.path.join(Output_Folder, "Full_Grid.shp"), str(NAR_U9.extent.XMin) + " " + str(NAR_U9.extent.YMin), str(NAR_U9.extent.XMin)...
-2
votes
1answer
30 views
Syntax error in arcpy.CreateFishnet_management
I can't seem to find the syntax error in this line. Can anyone else find it?
arcpy.CreateFishnet_management(Full_Grid, str(NAR_U9.extent.XMin) + " " + str(NAR_U9.extent.YMin), str(NAR_U9.extent.XMin) ...
2
votes
1answer
35 views
Calculating partial distances from whole segment in grid using QGIS?
I am using QGIS and trying to find a way to calculate partial distances of lines in a grid.
In the left part of the picture you can see the sum of the line lengths within the grid cell (108.96...), ...
1
vote
1answer
84 views
Using Create Fishnet and Project in ModelBuilder?
When I try to run the model below, the Create Fishnet tool creates a huge grid that totally ignores the extent input (BLOCK_Project1). It's nowhere near the extent input either.
If I click on the ...
1
vote
0answers
31 views
Extracting point attributes to polygon grid in QGIS
I have point data of endagered flowers found in a number of locations. Each location may have up to hundreds of flower
registrations.
I want to end up with a 1x1km grid colour graduated from the ...
1
vote
0answers
50 views
Extracting Grids containing 50% polygons (from land use layer) using QGIS?
I have a vector layer of Parcels for a certain area. I need to make grids of 100m * 100m over the parcel layer and then extract those grids which contain 50% or parcels by area.
I am currently using ...
1
vote
1answer
45 views
Distance mistake during grid creation
I'm working on a script where I create a grid with the bounding box of a geodataframe, a width and a height (they might be equals for a square grid).
I don't know why but when I try to make a 10m ...
4
votes
1answer
193 views
Coordinates from create grid
I am setting up a hectare grid in QGIS 3.0 using Vector > research tools > create grid > grid type:point and then defining boundaries by a preexisting polygon layer. I would like to get coordinates ...
1
vote
0answers
156 views
Georeferencing lat/lon .png map and adding grid using lat/lon? [closed]
I'm trying to input a .png map into my QGIS project for a small area in South Africa. I don't know the CRS used to create the map but it has a grid system on it with the lat/lon labelled (created ...
0
votes
1answer
36 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 ...
0
votes
0answers
29 views
Adding median values of several rasters (geotiff) to each fishnet polygon (200x200metres fishnet) using ArcGIS ModelBuilder?
I have a 200x200metres fishnet of my study area, with a few attributes in it, like land use, percentage of each landuse class.
Now I need to add the median value of more than 10 rasters to the ...
2
votes
0answers
104 views
Modifying vector grid using QGIS?
I would like to extend a vector grid of 1x1 km to a neighborouring area. The best option for me would be to simply modify the existing layer
This grid has been first made in ArcGIS, but I use QGIS so ...
