Tagged Questions

Use the `raster` tag for questions about raster datasets. A "grid" is a regular partition of a spatial domain into congruent nonoverlapping pieces or a set of lines forming a grid-like pattern (aka "graticule").

learn more… | top users | synonyms (1)

4
votes
2answers
801 views

How to read this GRIB data

on this open FTP server (ftp://ftpdatos.aemet.es/modelos_numericos/hirlam005_peninsula/) you can find HIRLAM models from the Spanish meteorological service. The documentation in the LEEME files (in ...
2
votes
1answer
140 views

Create a square grid polygon shapefile with python

i have the following coordinates minx,maxx,miny,maxy = 448262.080078, 450360.750122, 6262492.020081, 6262938.950073 i wish to create a square grid of size 1 m using python. import math ...
2
votes
1answer
187 views

UTM Grid as a Layer with Leaflet

How can I display a UTM Grid as a layer with Leaflet? Search a way to embed a OpenStreetMap map with Leaflet in a website. Particularity. I want to display a UTM Grid as a Layer. In addition, lower ...
2
votes
0answers
64 views

draw lines with an angle inside a rectangle in python

I am trying to make a plugin for Qgis with python. I have the four corner coordinates for a rectangle. I want to give the user the inputs, line space and angle (0 -180 degrees). With these inputs, I ...
2
votes
0answers
74 views

Plot the Shortest Paths in a Grid without any clash at a point of time

The efficient algorithm needs to be done and proved for the best solution for the given problem: User inputs: (#) Size of the NxN Grid. (N); (#) No. of Paths: Z; (#) Source and Destination ...
1
vote
0answers
153 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 ...
1
vote
0answers
211 views

how to get ascii grid from corine land use data?

I'm trying to get ascii grid with land use data (by one parameter - CODE_00). Afterwards I will import it into simulation tool. But I cannot figure out how to convert ascii grid from shapefile. ...
1
vote
0answers
112 views

Arcobjects - Properties Grid

Does anybody know a way, in VBA, to change the grid interval? For example: if my layout´s scale is 1:2000, my grid will have 200 meters interval and my layout´s scale is 1:5000, my grid will have 500 ...
0
votes
0answers
12 views

Are there any templates for how to define a NAD83 gridset on geoserver with EPSG:26913?

I was trying to add this gridset for viewing capabilities, but I have no idea how to define the levels for the tile matrix set.
0
votes
0answers
64 views

How do I determine programmatically what values to add to the proj4js constructor for a CRS or SRS such that I can iteratively render proper overlays

I think this is primarily a GIS based question as far as for example: var crs = L.CRS.proj4js('EPSG:2154', '+proj=lcc +lat_1=49 +lat_2=44 +lat_0=46.5 +lon_0=3 +x_0=700000 ...
0
votes
0answers
517 views

Lat/long grid in QGIS using WGS84 projected layers

I'm using QGIS to project some shapes that are in WGS84 coordinate system. I want to add a grid to the map in the map composer but when I try to do it the degrees don't show up. I have tried to do ...
0
votes
0answers
75 views

SAGA grid VRT, file how to apply a LUT?

I've created a heap of saga grid files for some hydro survey work. I'm looking at a way to read these into a mapguide raster/grid layer, I'm able to load up the grids using a vrt file, I can't figure ...
0
votes
0answers
98 views

OpenLayers.Layer.PointGrid and bounds

I'm trying to set bounds for PointGrid. I have map object which is 500x1500, but it's not working. Code: var points = new OpenLayers.Layer.PointGrid({ name : "Points grid", ...