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1500 questions
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5 answers

Enabling CORS in GeoServer (jetty)?

I hope somebody has already figured this one out. I just installed Geoserver 2.9 on a vanilla Ubuntu 16.04 distro. The Geoserver 2.8 method of enabling CORS with the shanbe.hezoun class does no longer work with Jetty 9.2.13. There are mentions that…
Dennis Bauszus
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29
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7 answers

Speed of various raster data formats

I'm having trouble locating any discussion or comparative benchmarking of different raster file formats (e.g., for use in data analysis in R). Does anybody have any insight into why particular formats may be faster or slower? Or should the…
George
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1 answer

How to assign CRS to RasterLayer in R

I have a layer with coord. ref. : NA. How can I assign coord. ref. : +proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0 to coord. ref. : NA? class : RasterLayer dimensions : 127, 146, 18542 (nrow, ncol, ncell) resolution :…
Nahm
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29
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9 answers

Manually transforming rotated lat/lon to regular lat/lon?

First I should clarify I don't have previous experience with the field, so I don't know the technical terminology. My question is as follows: I have two weather datasets: The first one has the regular coordinate system (I don't know if it has an…
skd
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28
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8 answers

Extracting coordinates of polygon vertices in ArcMap?

I've got about a dozen polygons in a feature class loaded in ArcMap 10, all in geographic WGS 1984. How do I easily obtain the coordinates associated with each vertex of each polygon in that feature class? Ideally I would like them to be nicely…
hpy
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28
votes
5 answers

Converting shapefiles to GeoJSON

I'm trying to convert shapefiles from the State of Texas Senate Districts website into a GeoJSON file for use with Google Maps API. I'm using QGIS to facilitate but I can't get the projection/coordinates right. So far I've tried Google Mercator…
user28781
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28
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4 answers

Making separate Python installation that can call ArcPy?

I see a lot of Q&As asking how you can create a separate Python installation (e.g. the Anaconda or Python XY distribution) that can use arcpy, while not 'breaking' the original ArcGIS python installation. I had this same problem, and I think I have…
James
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28
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7 answers

Are there open access terrain tiles with a permissive license like OSM?

Are there open access terrain pyramidal map tiles with a permissive usage license like OpenStreetMap's? I'm building aviation-related maps with Polymaps and need a good raster basemap. The Google terrain tiles are just perfect for my purposes:…
Nelson
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28
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4 answers

Merging/Dissolving polygons by Common Attribute Field in QGIS?

I have joined corresponding Local Enterprise Partnerships table data into a polygon shapefile containing UK Local Authorities. How do I Dissolve or Merge the the Local Authorities polygons by LEP_NAME as shown in the screenshot? Ideally, I would…
Jeremy
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28
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2 answers

Skill requirements and resources to run a private GIS consultancy/ GIS service providing firm?

I'm planning to make a private GIS service providing firm in the coming years. I just wanted to know what skills and resources are required to set up such a firm? I'm aware that the software, hardware and data collecting equipment would cost me. Can…
Josh
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28
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1 answer

Gravity/Huff model tools

I am looking for a way to simulate a gravity model using a point-based layer. All my points are assigned a z-value and the higher this value, the larger is their "sphere of influence". This influence is inversely proportional to the distance to the…
Damien
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28
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5 answers

Seeking SVG symbol library for QGIS

I am currently using default simple symbol capabilities or dingbats fonts for point objects. Is there maybe a SVG symbol library for QGIS that is a bit more extensive than that which is included? I've found this site…
U2ros
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28
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5 answers

Are there any international standards for map symbology?

We are going to let our users add points, polylines and polygons to a map. Are there any international standards for map symbology? For example for emergency symbols?
MathiasWestin
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28
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3 answers

Citing QGIS in formal publications

What is the best way to cite QGIS in a formal publication? I mean, what text should be included in the References / Literature Cited section of a paper or report. I'm also specifically referring to the software itself, rather than the user's…
blackthorn
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28
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4 answers

Crop simple features object in R

Is there a function to crop sf map object, similar to maptools::pruneMap(lines, xlim= c(4, 10), ylim= c(10, 15)) used for SpatialPolygon or SpatialLine? I am considering st_intersection() but there can be proper way.
Kazuhito
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