Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [vector-grid]

Use for questions about vector grids which are also known as fishnets

2
votes
1answer
62 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
0answers
66 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 ...
4
votes
0answers
427 views

Insert sequential row and column values automatically into a fishnet dataset

I have a grid that has about 30 rows with approx 15 columns each. I want to label them as A1,A2,B1,B2 etc (Alphabet row, integer is column). Is there any way to do this programatically? There is no ...
3
votes
0answers
186 views

Centering hexagon grid layer on point in MMQGIS?

I would like to use GPS coordinate of one point and create a hexagonal grid layer around it where it is at the exact middle of a hexagon. When using MMQGIS it produces a hexagonal grid on the current ...
3
votes
0answers
90 views

Reduce Vector Point Frequency in QGIS 2.18.3

I have a vector point file with 50,000+ points from a model output. I have downloaded the vector field renderer plugin resulting in a flow direction for each point. What I would like to ultimately do ...
2
votes
0answers
42 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 ...
2
votes
0answers
99 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 ...
2
votes
0answers
200 views

How to draw a raster over the World using Postgis

Im currently working on a system to track user interaction on mapwidgets. Now i need to visualize the bounds that users are looking at on the map. Since were using a whole lot of data i need to find a ...
2
votes
0answers
380 views

Convert raster cells to vector (polygon) grid?

I would like to convert a raster (representing a study area) to a polygon layer with features representing individual raster cells. The raster layer contains roughly 30 million cells @150x150m. I ...
2
votes
0answers
309 views

Create fishnet of irregular polygon study area

I would like to create a fishnet (grid of 150x150m cells) for a study area (irregular shaped polygon). However, the Create Fishnet tool creates a fishnet representing the full extent of the study area ...
2
votes
0answers
66 views

Aggregate nearby points to develop equally sized regions in QGIS

I have a list of 4,500 points (lat, long, unique id, attribute). I also have a service territory which all of the points fall into. I would like to break the service territory (polygon) into 6 ...
2
votes
0answers
224 views

How can I improve the resolution of a vector grid made in north pole stereographic projection?

I've been struggling with this for a while and wondered if someone could lend a hand. I have a map which already has sampling points from centroids in a 35x35km grid that was created in north pole ...
2
votes
0answers
239 views

vba code for algorithm to assign track file gps UTM coordinates (East Africa) to an overlay 5x5km grid cell

The GPS coordinates are temporarily imported in to an Access database from DNR Garmin files (downloaded as dbf file(s)), and then exported for mapping in AEJEE (ArcExplorer Education Edition). I need ...
1
vote
0answers
30 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
vote
0answers
98 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 ...
1
vote
0answers
50 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 ...
1
vote
0answers
19 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 ...
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, ...
1
vote
0answers
24 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 ...
1
vote
0answers
30 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
48 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
0answers
123 views

Calculating built-up density for each cell in vector grid in QGIS?

I have two layers: a raster of India showing built-up areas (black pixels represent built areas) and a vector grid overlaying it. My goal is to calculate the percentage of built-up surface in each ...
1
vote
0answers
84 views

Creating single squared tile fishnet buffer based off shapefile in QGIS?

I'm interested in creating a fishnet buffer around a current grid I have. The fishnet buffer I'm interested in making needs to be exactly the same cell size and extend just one grid cell around the ...
1
vote
0answers
44 views

How I can find raster angle in ArcGIS

I have a raster layer in ArcGIS with specific extent. How can I be able to find the angle of this raster frame? Because I create fishnet but it is like a rectangular area and does not match to ...
1
vote
0answers
143 views

how to divide a shapefile and its data into tiles?

I have a population map of counties shapefile. I need to divide this data into tiles in order to have a gridded population map. population_of_cell = population_of_county / area_of_county * ...
1
vote
0answers
34 views

How to deal with missing values in Fishnet

I m working with ArcMap 10.2.2. I have one dataset with red deer observation (Excel Sheet) The data is joined to a polygon layer with administrative boudaries: It looks like this Blue are the red ...
1
vote
0answers
134 views

Crop a raster by a grid shapefile with different extensions in R

I need crop a raster by a grid shapefile to obtain raster files cutted according to grid cells (which are named "PageNumber"). My function is: g=shapefile("50x50km_final.shp") f=raster("...
1
vote
0answers
370 views

Creating rotated fishnet from grid of evenly spaced points in ArcGIS Desktop?

I am working with climate models, so I have a point shapefile representing the grid of data points of my climate models. My points are sort of evenly spaced along both directions, the distance being 1,...
1
vote
0answers
31 views

Using Near function on multiple variables at same time?

I am trying to calculate between variables and a Fishnet using the Near Analysis Tool. I have about 50 variables (Binary (Is there "a" information at this location)) for each XY points (300000) and I ...
1
vote
0answers
275 views

Creating features(point) grid on polygon

I am working on GIS based desktop application using C#. I am using dotspatial library in this project. Now I need to create a grid of features on polygon. This grid cell (rectangle) should be 20*20 ...
1
vote
0answers
36 views

How much Vector Grid is intersected by another polygon layer using ArcGIS for Desktop?

I have a grid 5X5 sqkm and another vector layer with 2 different land cover type (let's say "forest"/"no forest"). I wish all the squares composing the grid to get a value ranging from 0 to 1 ...
1
vote
0answers
104 views

How to map/analyze artifacts that only correspond to 1x1m units?

The archaeological site has over 4 million lithic (stone tool artifact) remains from 1 occupation level, so individual proveniencing is impossible. Instead, the lithics from each 1x1m unit, were put ...
1
vote
0answers
360 views

Spatial correlation using QGIS?

I'm looking into performing a spatial correlation test of 2 matrices to see where they overlay. To do so I need to create a grid layer of 2.2km2 around the coordinate points. I've tried the vector - ...
1
vote
0answers
61 views

Draw gridded lines inside a feature and generate random points

I have several vectors containing features that originated from a 30 x 30 m raster. I want to generate a grid of lines (fishnet) in all of the features that are more than 30 x 30m. As shown in the ...
1
vote
0answers
439 views

How to rotate the screen in ArcGIS-Online?

I need to print out my map in ArcGISOnline, however I'm using a grid system and need to rotate the screen so that I can print each map individually and have them line up. Any thoughts on how to do ...
1
vote
0answers
81 views

Vector Layer Symbol (ism) properties?

I would like to streamline the render of a polygon grid vector layer as a simple line (no fill) via Python coding. I am I bit confused by the implementation referenced by the API. Is it possible to ...
1
vote
0answers
800 views

Openlayers Vector Layers with Google Map Base Layer (via Grid): Vectors Stick but can't get correct resolution/projection?

Revamping this question instead of opening a new one. Previous issue: vector layers were not "sticking" to the map, so when you would zoom in or out the vector layers would "come out" at you. Note ...
1
vote
0answers
227 views

Polygon dynamic grid creation for a shapefile

I have used QGIS Vector->ResearchTools-> Vector Grid to create a 1 lat x 1 long grid for the landpolygon shapefile (from osm). Now, I am interested in creating dynamic grid for the original ...
1
vote
0answers
397 views

In ArcGis 10, spatial join of a hot street value to a fishnet cell is counting multiple values for same street segment

So, I am working on a fishnet, so that we can attribute multiple values to points within different cells (i.e., ranking light poles as optimum for traffic cameras based on the number of speeding ...
0
votes
0answers
21 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 ...
0
votes
0answers
58 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 ...
0
votes
0answers
25 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 ...
0
votes
0answers
28 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 ...
0
votes
0answers
124 views

Generate XYZ coordinates of DEM mesh/grid

Is there a way to generate a wire grid of plain text XYZ coordinates starting and ending points for each wire segment? I want to generate them from a digital elevation model. Preferably with gdal/qgis ...
0
votes
0answers
44 views

Creating regular grid cells (square) by ArcGIS Desktop through geographic coordinate system?

I need to create grid cells (square =1000*1000 meter or 500*500 meter) by ArcGIS through the geographic coordinate system. It worth to be noted that the latitude coordinates between 22~23 degree.
0
votes
0answers
103 views

Creating USA Vector Grid at 1KM intervals using QGIS?

I am attempting to create a grid in 1km intervals to cover the contiguous United States in order to interpolate various underlying data layers associated with non-uniformly shaped geometries to the ...
0
votes
0answers
135 views

Making a grid on a map and identifying points in each cell?

I have a map of a country with the location stores within the country (a store identifier and the coordinates of the store). I want to: Create a grid over the map (say, 2 km by 2 km). Create an index ...
0
votes
0answers
80 views

Individual labelling for UTM-grid

I need to create a UTM grid (WGS 84 UTM zone 18S) with 250x250 meters cells in ArcMap v. 10.5. But I want to label each cell individually. I have already tried to create a fishnet and use the grid ...
0
votes
0answers
126 views

Creating a lightweight 1 degree x 1 degree mesh with GeoJSON?

I have produced via QGIS a 1°x1° mesh polygon and exported that in GeoJSON format. However, the file is 11-15 MB large. That is really too heavy to be used in Web applications, such as OpenLayers (...
0
votes
0answers
42 views

Changing tracks to vectors in a grid

This is a version of a question that I posted on the GRASS list, but I didn't get any suggestions there. I would like to overlay a grid (cell size about 500 m x 500m) over an animal track created from ...