0
votes
0answers
3 views

Are there examples of high-level interfaces to NetCDF

The R raster package and GDAL both have independent wrappers around NetCDF-4* that treat an array variable as a "complete" dataset, i.e. they provide objects or interfaces that seamlessly give access ...
-1
votes
0answers
4 views

correlation between distance from volcano and point features

I have a problem, i want calculate the correlation between distance from volcano and disease prevalence. i have a point shapfile that stands for volcano and 20 buffers that all have 10km zones. also i ...
1
vote
0answers
5 views

Why is the SelectionChanged signal triggered every time i click on the layer?

i'm making some experiments with the SelectionChanged signal of a QgsVectorLayer. i try this piece of code : curLayer.selectionChanged.connect(self.test) and "test" print a warning message. The ...
-1
votes
0answers
8 views

M.Tech Thesis in Geoinformatics - GIS Integration Services with Electric Utilities based on CIM standards - Need suggestion [on hold]

I am doing M.Tech in Geoinformatics, did UG in Electrical & Electronics Engg and 3yrs Software Work Experience in DotNet and Java know C,C++ also. I am looking for a thesis work in the field of ...
0
votes
0answers
8 views

correlation between point feature (disease) and elevation

I have a problem! how i can calculate the correlation between point feature and Dem raster? hypothesis: disease prevalence in high altitude is more than low altitude. I must do this in ArcGis10. i ...
1
vote
0answers
5 views

Binary insert into Postgis geography column results in value being inserted as geometry

When writing WKB as a value (and as a binary parameter) to a geography column, the persisted value is not geography. Example Java is also available here: ...
1
vote
1answer
8 views

Why is the quantile reclassification method yielding classes of vastly different cell counts?

I am trying to reclassify many euclidean distance layers (which are based on lines) each into 10 classes of equal area. When I attempt to do this, using the quantile reclassification method, some ...
0
votes
0answers
6 views

Are there any national scale (contiguous US) weather data sets

Does anyone know of any national (scaled, spatially averaged, modeled, etc.) weather datasets that cover the contiguous US for the period 1980 to 2011? Hourly or daily values are fine, but hourly ...
0
votes
0answers
5 views

Google Map Projection Skew - Need correct Projection

I'm having a really difficult time resolving skewed grids when projecting onto Google maps using Alteryx outputs. Within the module, I'm taking GRD files and aggregating rows and columns to re-size ...
0
votes
0answers
3 views

PyQGIS standalone gdal_ECW_JP2ECW.dll error

This is my code in a batch file My error messages are gdal_ECW_JP2ECW.dll error unable to open EPSG support file gcs.csv Thanks in advance REM Change OSGEO4W_ROOT to point to the base install folder ...
-1
votes
2answers
12 views

Converting *.kml file to *.lyr file so Google Earth can create spatial data to use in ArcGIS for Desktop? [duplicate]

Want to convert the .kml file into .shp file so that I can create new the point, line and polygons data to work in ArcGIS. Actually I want to use Google Earth to make data for ArcGIS.
1
vote
1answer
6 views

Rotating labels in cartocss with controlling the rotation basepoint

I am trying to rotate multiple text labels in cartodb/cartocss. I am offseting each label so that they appear to be stacked using text-dx and text-dy. Using text-horizontal-alignment: left; and ...
0
votes
0answers
6 views

How to programmatically interrupt QGIS initialization and startup

I'm wondering how to interrupt the initialization of QGIS 2.0 on Windows XP before start up. I've put a dialog in one of my plugins that shows up on start up. However, I'd like to make a quit button ...
-2
votes
1answer
10 views

Matching Layer and Data Frame coordinate systems? [on hold]

Should the data frame coordinate system coordinate system be the same as the layer projected coordinate system? I'm using ArcGIS 10.1 for Desktop.
1
vote
0answers
8 views

How to determe upper most point in stream based on gradients? [on hold]

I am trying something I have never tried in my GIS career and was hoping someone out there may have done this same process or something similar or may have a best approach. For this particular project ...
1
vote
0answers
5 views

Set max scale on wms layer in GeoServer

Is it possible, and if so how, to set the maximum scale a wms layer can be viewed? I know you can set it in a rule in the sld style, but from the client you can always(?) change the style and thereby ...
0
votes
0answers
10 views

ArcSDESQLExecute class and toolbox help [on hold]

I'm a complete noob when it comes to python and I've got a few questions about the ArcSDESQLExecute option for calling a SP. For my setup, we ran the SP and then use a SQL execute script to execute ...
1
vote
0answers
6 views

PgRouting: What index should have the restriction table

I have this tables to feed my routing engine using pgr_trsp: vzla_rto have the links and nodes (650k) vzla_restriction have the turn restrictions (10k) CREATE TABLE map.vzla_restrictions ( rid ...
0
votes
0answers
24 views

PostGIS Spatial query taking a very long time

I'm trying to return a count of crimes (points) that occur in each police grid (polygons), as well as the geometry data, but the query takes ~22 seconds. This seems oddly high and will be problematic ...
-1
votes
1answer
27 views

How to load shapefile in GDB and make it change that shape for all MXD in ArcGIS for Desktop? [on hold]

I'm using ArcGIS 10.2 for Desktop. I'm working with a lot of MXDs and somehow one of the shapes was edited inside the File Geodatabase (GDB) feature class. Now I want to load the previous shapefile ...
0
votes
0answers
10 views

How to create an SQL Computed Column using either the Geometry column or STArea

Ok, I've done a fair bit of research on this but anything I've found so far involves queries or transformation; not a computed column. I'm no RDBMS expert and clearly fall in the category of knowing ...
1
vote
0answers
17 views

Saving/Loading QGIS style .qml and avoid specified symbology

Is it possible to save QGIS styles without the symbology style? This may seem like a strange question, but I am trying to automatically set the ValueMap widget under layer properties via a plugin for ...
0
votes
0answers
10 views

Callback method geocode items nominatim not work

function addr_search() { var inp = document.getElementById("addr"); $.getJSON('http://nominatim.openstreetmap.org/search?format=json&limit=5&q=' + inp.value, function(data) { ...
0
votes
0answers
10 views

My self-hosted CartoDB map references /api/v1/map — No route matches

I'm using a self-hosted install of CartoDB. When I try to publish a visualization using the sample Europe data the visualization page references /api/v1/map which results in a routing error. ...
0
votes
1answer
17 views

CartoDB/SQL Console?

Lacking much programming experience, I've spent a lot of time familiarizing myself with HTML, CSS, and SQL over the past couple of days so that I could make a layer selector for a CartoDB ...
0
votes
0answers
10 views

Attribute table in Tilemill - incorrect informations

I was editing OSM shapefile in ArcGIS 10.1. I have added new column to attribute table. Type of columns is "text/string". So content of the lines is only text (type of polygons). After adding this ...
1
vote
0answers
20 views

ArcPy Add Graph Window

The arcpy MakeGraph_management tool suggests that a graph is stored via an in_memory representation that can be either a) added to the host app or b) saved using SaveGraph_management. I can not find ...
-2
votes
0answers
39 views

If sentences with condition for angles [on hold]

As I started using python recently I developed one very inelegant code (below). The aim is to do calculation with every element of the list k8 (k) if the element of list A (g) falls within certain ...
-2
votes
0answers
16 views

Script tool not connecting with output features correctly

I don't know if this is a problem with my script or the system in general, but everytime I try to run a script through a script tool the output features appear disconnected in the table of contents. ...
1
vote
1answer
17 views

Creating a graduated buffer in QGIS

I'm attempting to map cell phone towers and their range in QGIS. I'm wondering if it's possible to create buffers which change color intensity according to their distance from a central point. The ...
0
votes
0answers
11 views

Replacing text string on layout text element by reading lookup value from table via SearchCursor? [on hold]

I'm not sure what the best way is to go about this, but here's my situation: In short, I exported a domain to a table (and I exported the table as a CSV, too, just in case it might be easier to work ...
1
vote
0answers
9 views

Memory leak with GDALOpen?

I'm very new in using GDAL, and trying the tutorial given here. But with a piece of code with only GDALRegister_GTiff(); GDALDataset *poDataset = (GDALDataset *) GDALOpen(argv[1], GA_ReadOnly ); ...
-2
votes
0answers
31 views

Multiply one value in list by x if corresponding value falls within cartain angle? 0° to 360° problem [on hold]

I want to check between which two calculated angles an angle g from list A falls. The the two angles are calculated from az: az+45 and az-45, az+90 and az-90, az+135 and az-135. A=[0, 45, 90, 135, ...
1
vote
1answer
20 views

How to calculate regrowth area?

Thanks to Best Landsat-5 TM band combination for detecting fire scars I am able to calculate burnt area in an absolute way (Normalized Burn Ratio). Does a ratio or delta operation exist to calculate ...
0
votes
1answer
38 views

Using insert and search cursors on same feature class to clone row?

I'm using the code below in order to attempt to clone a row in a feature class and add that same row to the same feature class after updating its metadata (Name, date_start, date_end, etc.) The ...
0
votes
0answers
11 views

Append georeferenced data from one table to another table in CartoDB

I have two tables with an identical structure of columns in CartoDB. Both are georeferenced. I'd like to combine the date of the two tables into one table. In the options menu of CartoDB there is an ...
0
votes
1answer
14 views

Rank cell values across multiple grids

I have multiple grids, one for each month of a year. I would like to create a new grid for each month/year combination that the cell value is the percentile rank of that cells value in the grid stack. ...
2
votes
1answer
33 views

raster landuse calculation

I want to calculate the counts of each landuse type based on the unique landuse code from each raster datasets. Raster dataset consists of six major landuse and their unique codes are below: 1) ...
1
vote
1answer
111 views

Adding count of features in categories to legend using ArcGIS for Desktop?

I am using ArcGIS 10.1 for Desktop and I would like to know How to add the Count (which is visible on the Symbology tab of the Layer Properties dialog) to the legend?
0
votes
0answers
11 views

get map tiles for a rectangle

Based on this tuttorial I can easily find out a tile for a point. But is there any algorithms to find all the tiles that are covered by a rectangle(or by any other feature) ?
0
votes
0answers
12 views

How to compute the ls factor equation for USLE model in qgis grass r.mapcalc

To compute the LS factor for the USLE model, the following equation easily works in ArcGIS. How can I perform the same in QGIS under GRASS r.mapcalc? LSfator = Power (("flowaccNW") * ...
1
vote
1answer
21 views

Add XY Column in QGIS [duplicate]

Following on from a previous question of mine, where I was given coords in degree-mins, I have successfully converted them to decimal degrees, thanks for the help. I have created a CSV file from ...
0
votes
0answers
16 views

Route optimization for field engineers

I have a set of field engineers, each with a specific expertise and I have to plan a schedule and assign customers based on their nearest reachable address based on customer requirement. Is there an ...
0
votes
0answers
9 views

Openlayers- problem with editing multiple wfs layers

My web map works fine when I use only one WFS layer in my code. I can draw, modify and delete features without any problem. This works well: var line1 = new OpenLayers.Layer.Vector("Line 1", ...
0
votes
0answers
21 views

Multiple Z point data kriging interpolation? [duplicate]

I asked this question yesterday and is on hold because I was not specific in my question. I have added my trail code for the question. The question is kriging interpolation of many z. To be more ...
-1
votes
1answer
18 views

vb.net arcobjects enable customized context menu item only if a feature is selected

The solution may be very simple, but I haven't made it work. I want to enable a data view context menu item only if a feature (in polyline layer) is selected, all other places the item should in ...
0
votes
1answer
14 views

Removal of Qgis 2.2 after 2.4 install, while keeping WFS and WMS features

Can i safely uninstall Qgis 2.2 after I've installed the 2.4 version and keep my WFS and WMS features? I'd rather be certain, so I don't have to setup the whole thing again.
0
votes
1answer
20 views

Converting XYZ tile request to WMS request?

I am wondering if it is possible to convert XYZ layer request e.g (http://dev.openlayers.org/docs/files/OpenLayers/Layer/XYZ-js.html) to a regular WMS request? (Basically if it is possible to convert ...
0
votes
1answer
17 views

Filtering out canopies and buildingsfrom DEM to have a bare earth elevation

Can anyone suggest methods in filtering out trees and buildings from a DEM so as to come up with a reliable DTM? What I have is a grid from a LIDAR data. I was going to clean out the unnecessary ...
1
vote
1answer
38 views

Distributing processed OpenStreetMap data legally? [on hold]

I'm working on different hiking maps, based on OpenStreetMap data. I want to distribute them, but I'm not sure, if I'm allowed to do so. Would it be OK to lay them out at a park entrance and ...

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