0
votes
0answers
1 view

How to create new field using the values of one attribute column multiplied by a constant number inQgis or ArcGIS

I have point data that has a small length attribute - I want to times this length attribute by a constant number (I need to trial a few different constants) to find the diameter of a protection zone ...
0
votes
0answers
2 views

Feature Extend Zmin Zmax automatic calculate

I need to set Feature Z Extend z min = -100 000, z max = 100 000 values of many layers, I do not find opportunities it automatically, maybe thereby help?
0
votes
0answers
2 views

image segmentation of RGB image by K means clustering in python

I want to segment RGB images for land cover using k means clustering in such a fashion that the different regions of the image are marked by different colors and if possible boundaries are created ...
0
votes
0answers
3 views

How to get offline tiles first else pull online tiles in Openlayers 3 using source.XYX

I have a cordova phone app where some of the tiles are stored in the filesystem. If they are not in the filesystem, I want to get them from my webserver. source: new ol.source.XYZ({ ...
1
vote
0answers
3 views

How to export from ArcMap to tab-delimited text file, while preserving formatting and values?

I'm working with a complicated fGDB featureclass which contains hundreds of fields, in a variety of text and numerical formats. This is proving difficult to export into tab-delimited text file format. ...
0
votes
1answer
3 views

Using ArcGIS Tabulate Intersection to determine maximum land cover within polygon area

I have a shape file (layer A) containing different polygons - each polygon representing an ecoregion. I have another layer of polygons (layer B) - each polygon representing a watershed boundary. I ...
0
votes
0answers
5 views

Change just one raster value while keeping the others the same

I am trying to increase the extent of a kernel density raster with the new cells containing zeros, so that I can run an isopleth in GME without receiving an insufficient extent error. I have managed ...
0
votes
0answers
4 views

CartoDB JS - GetSQL () - SetSQL ()

Re: CartDB Javascript... How can we use the sub-layer methods, GetSQL () and SetSQL (), on Named Maps? I believe that with Named Maps, we need to provide the API key. But I can't seem a way to do ...
0
votes
0answers
14 views

Adding Array of strings in File geodatabase feature-class' field

I need to include array type in file geodatabase/shapefile field's content so that when i expose it as a map service, i can get array instead of string or integer. e.g., i got fields: OBJECTID, ...
1
vote
1answer
19 views

Mean watershed slope - are there better methods than taking the mean of the contained slopes?

I am wondering if there are better methods for determining the mean watershed slope, other than taking the mean of the slope values contained within the watershed? For example, could or should one ...
-1
votes
0answers
11 views

Trying to execute ModelBuilder through C#? [duplicate]

I have a problem when trying to execute a model builder through C# the application throws: an error has occurred error hresult e_fail has been returned from a call to a COM component Note : ...
1
vote
1answer
12 views

Properly setting Extents in Arcpy Using path

I am trying to set the extents of my processing using Arcpy, but when my processing is completed, there has been no change to the extents (it results in an extent that did not go as large as I ...
1
vote
0answers
14 views

Converting *.adf files to *.xyz for XPSWMM?

i am trying to convert adf files to xyz files in order to import them to XPSWMM. i also need the elevation values. however, when i use QGIS to translate the raster files (adf files) to xyz these ...
1
vote
1answer
17 views

OpenLayers geometric points won't show

I am new to OpenLayers and a beginner to JavaScript, but I have tried for 3 days and nights now. My code seems okay but there is something I am missing out and just can’t figure it out. I have this ...
1
vote
1answer
15 views

rasters written with gdal show up with units of meters when they should be degrees

I have some SMOS soil moisture data packaged in a netcdf format distributed by "cp34-bec". I have been able to use GDAL to extract this data as a raster layer, using a projection i think is ...
0
votes
0answers
4 views

gdalwarp reprojection causes missing data

I have tried to reproject and resample an SRTM DEM file from WGS84 to a cylindrical equal area projection. The problem is there is missing data as seen in the image below. The command I use is: ...
0
votes
0answers
10 views

Assuming spherical earth and 24 satellites in GPS model?

I am working on a project where given satellite positions in the sky, I am to find my location on earth. The assumption is that there are 24 satellites orbiting on the earth but only a few will be ...
2
votes
1answer
16 views

Redirect remote shell command output to ArcMap geoprocessing tool display?

I have a Python script that runs a shell command on a remote server (using the Fabric module). When I run the tool in the debugger, I see all the output scrolling, as the command can take hours to ...
0
votes
1answer
21 views

New Delhi, India, town level boundary files for GIS

I'm trying to find boundary files for New Delhi to map religious diversity (data here: http://www.censusindia.gov.in/DigitalLibrary/MFTableSeries.aspx), and I have downloaded the GADM files and tried ...
0
votes
0answers
5 views

Calculating slope from elevation returns hole when using ST_Slope in PostGIS

I have rasters from the National Elevation Dataset loaded into a PostGRES database and am using the built-in function ST_Slope to calculate the slope. However these contain many holes where there is ...
1
vote
0answers
10 views

Extract multiple grids from HDF with subset tool using ArcPy

This should be fairly simple thing but bugging me at the moment. I have ~5k HDF files in a folder with names: MOD11A1.A2001001.h24v05.005.2006343042921 and so on..... I have following which loop ...
0
votes
1answer
61 views

Is 2Gb RAM enough to run ArcGIS for Desktop?

I am on a budget and I want to buy a laptop solely for the purposes of using Arcmap and nothing else. The laptop I am going to buy is as follows: HP Stream 11-d061na 11.6 Intel Celeron N2840 dual ...
0
votes
0answers
9 views

Geometric Network Downstream River Tracing?

I'm using ArcGIS 10.1 for Desktop and I need to trace downstream on a river network from a Discharge point to another point where the river intersects polygons of interest. The distance from each ...
0
votes
0answers
9 views

Migrating ArcGIS server Portal 10.2.1 to 10.3.1

I am looking for Migrating ArcGIS Server Portal contents from 10.2.1 to 10.3.1. To expand, I would like to migrate the contents (web maps, layers, apps etc..) from my running 10.2.1 portal to 10.3.1 ...
1
vote
1answer
24 views

How to troubleshoot a hard crash on CopyFeatures_management()

I have a script that uses arcpy.CopyFeatures_management(FEATURE_CLASS_SDE, FEATURE_CLASS_LOCAL) to copy a feature class from our enterprise SDE to a local file geodatabase. For the most part, it works ...
0
votes
0answers
3 views

Install Trouble: TinyOWS with WFS-T

I've been trying to install a tinyows with wfs-t server to compare the project with OSM. OSM was a rather easy install but I'm running into trouble with tinyows because of fragmented documentation. ...
1
vote
0answers
8 views

Optimize PostGIS query, ST_Intersects - Raster and Geom

I am trying to run a spatial query between two tables. Table one (prism_ppt_monthly - see below for details) is monthly precipitation data. Table two (usgs_basin_boundary - see below for details) are ...
1
vote
1answer
23 views

What is CID field created by Create Random points?

In ArcGIS the result of Create Random Points tool when using a feature class to constrain the extents has an attribute called CID. What do the values in this field represent?
0
votes
0answers
15 views

QGIS dissolve by attribute and retain primary polygon attributes

I have a parcel shapefile. Many of the parcels have been combined over time, but the shapefile still represents the original parcel boundaries. The attribute table has a field for the original parcel ...
1
vote
1answer
32 views

Publicly available oil & gas lease data

Does anyone know any public sources for GIS leaseholding data for large players in the Oil & Gas industry. I would like to get my hands on leasehold polygons of large producers like Chevron, ...
-2
votes
0answers
37 views

Why can't ArcMap, the benchmark cartography tool, create 4 color maps? [on hold]

With 4 colors you can create a map in which adjacent polygons never have the same color. It's a technique that has been known for at least 100 years. But ArcMap doesn't have the ability built in to ...
0
votes
0answers
15 views

why did my python mysql script stop working, with error on fetchone()?

This code was working a couple weeks ago, then without changing anything, it started throwing an error. Here's the code: #Query climate table sFrom = dateIncrement.strftime("%Y-%m-%d ...
-1
votes
0answers
31 views

How to organize lots of data in PostGIS? [duplicate]

I'm creating a PostGIS database which will hold thousands of different shapes (imported from Shapefile, GeoJSON, etc), and they'll stay there and be queried over time. Do I need to create a ...
0
votes
0answers
15 views

XYZ bounding box of a spherical polygon

I'm looking for an algorithm to calculate the 3d bounding box of a spherical polygon - i.e. the min/max X, Y and Z over that part of the surface of a unit sphere. The purpose is to aid fast ...
0
votes
0answers
14 views

Problem installing MbTiles plugin for GeoServer

I have had trouble getting the MbTiles plugin to work with GeoServer. I installed each of GeoServer 2.5, 2.6 and 2.7 in turn. All three installations seemed to work fine on localhost without any ...
0
votes
0answers
11 views

Jquery attr() funciton returning “undefined” for GetCapabilities Request

On my webpage where I am displaying my maps, I want to add a link to the metadata of the selected map. I have specified the link in GeoServer in the MetaDataURL field, and should be able to retrieve ...
2
votes
2answers
22 views

Changing the transparency of a raster layer with ArcObjects

I'm trying to do some simple things with the .net framework and ArcObjects, but have little experience with this type of development. I would like to iterate through the layers in a map document and ...
-1
votes
0answers
25 views

Merging all features in a Geodatabase using a common Name

I have a Geodatabase containing a large number of feature datasets storing contaminated site information. Each feature dataset contains a 'site' feature class (for example 'SITE_9345'). What I ...
1
vote
0answers
22 views

Convert shapefile to WGS84

I have a shapefile with shapelength and shapearea, and would like to convert to WGS84 to use with ggmap. Eventually, I would like to get plot google map of individual regions of the shapefile, and ...
0
votes
0answers
9 views

how to remove duplicate values geojson on feature.properties.name?, using leaflet oneachfeature

I have duplicate value into select combobox, using oneachfeature and geojson the values are into combobox select, I'm trying to remove duplicate caracteristiscas the GeoJSON to populate within a ...
3
votes
1answer
43 views

Split by Attribute without making separate new feature classes or shapefiles?

I would like to automatically split a featureclass by a specific field. I've seen a few tools online and on XToolsPro, but what it does is create multiple NEW shapefiles or feature classes. What I ...
3
votes
1answer
83 views

How to iterate through all geometries using a search cursor?

I would like to use a python add-in which uses a button click to iterate through each selected polygon one by one. The following code manages to zoom only to the first polygon. How can I adapt it to ...
1
vote
1answer
25 views

Python: how to set a different output folder

I want to transform some vectors to rasters in my folder but I have difficulties setting the output folder. The following code only allows me to output to the original database. I hope to output all ...
0
votes
0answers
6 views

Loading geoserver WMS raster layer in QGIS python console

I am using the following snippet to load a raster layer deployed under wms service using geoserver, in qgis python console. I am getting False output. Any idea? registry = ...
0
votes
1answer
25 views

How to create a locator through Open Street Map Data

I need to make a locator for UK addresses and I know Open Street Map has very good data for the UK, I was wondering how I can convert the data for house addresses, which is in xml form, into a locator ...
1
vote
0answers
9 views

PyQGIS Standalone Crashes python.exe when zooming out too far / Process finished with exit code -1073741819 (0xC0000005)

I have the following PyQGIS Standalone App which is working fine so far. One little problem is that if I zoom out to the MaxExtent(by scrolling the mousewheel) the app crashes python.exe so that the ...
1
vote
0answers
11 views

Error: Algorithm not found (QGIS)

I wrote the following code using QGIS'API. import os from qgis.core import * import qgis.utils prefix_path = os.environ['QGIS_PREFIX_PATH'] QgsApplication.setPrefixPath(prefix_path, True) ...
0
votes
0answers
13 views

Connect two objects so there is no 'break' between nodes in MapInfo [on hold]

How can two polygon objects in MapInfo 10 be connected or combined, so there is no break between nodes? Example: how could you connect two square objects (4 nodes each), into one rectangular object ...
1
vote
0answers
34 views

Do countries have a Latitude and Longitude range?

Do countries have a Latitude and Longitude range?. Is it possible to get the latitude and longitude range or boundary for each country. UK lat and long is 51.5000° N, 0.1167° W. What is the ...
0
votes
2answers
35 views

Which co-ordinate reference system should I use for the British Isles?

I'm wondering which co-ordinate reference system would be the best to use for a project covering the British Isles, since the UK and Ireland have separate systems - British National Grid and Irish ...

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