0
votes
0answers
4 views

What are Mapnik, GeoServer, CKAN, GeoNode, GeoNetwork?

I'm trying to get a clear view of the roles of different components here, this is not a "which is better" comparison, these components have different roles, but their functions overlap. (Comparison ...
1
vote
0answers
8 views

Retrieving routedescription geometry as GeoJSON

I'm building a small web-map and would wich to display a polyline representing a specific route via roads. With leafletjs it is easy to display the geometry on/over the map. So that's not the problem. ...
0
votes
0answers
17 views

How to “lower the resolution” of a lat long csv

I have a csv with 12.5 million date/lat/long/value points, it's a point every 800 meters ( in a grid ) of the united states what's the best way to convert the points to every 1600 meters? or 3200? ...
1
vote
0answers
13 views

Algorithm for estimating position of many objects and differentiating those?

Let's assume a crowd-sourced tree location use case where a research team asks hikers to GPS the location of a specific tree type in case they encounter it. This will lead to a large number of ...
2
votes
1answer
52 views

Check if line crosses a polygon

What I'm trying to do is with JSTS to check with lineGeom.crosses(polygonGeom) function if a line is crossing completely a polygon. The problem is that both cases from the picture returns true. I ...
1
vote
0answers
11 views

Loading GRASS gives error installing QGIS Chugiak on Windows 8.1?

I experienced a problem installing QGIS 2.4 Chugiak on Windows 8.1, resulting in a error loading Grass. This was resolved by setting the install path to a location without any spaces in the path ...
2
votes
0answers
21 views

data source for worldwide cross-sections of topographic and bathymetric for woodworking art project?

i am a decent r programmer and statistician, i am able to work with data sets pretty well. i am less familiar with GIS tools, but if given a shapefile i can certainly plot political borders and ...
0
votes
0answers
9 views

Show graph in html popup for dynamic data of a postgresql table

I am trying to plot xy value from a postgresql database table. In the table there are multiple longitude and latitude corresponding to values. The table is like this, where all longitude and ...
1
vote
2answers
17 views

Looking for tool to start ArcGIS for server 10.1 services automatically

Is there any tools or scripts to start ArcGIS server 10.1 services automatically when the services are stop? Thanks
0
votes
1answer
10 views

how to add roadname covered (parallel) to line,polyline , multiline using leaflet..?

i want to add road name parellel to line or if line is corved then name also display like corved how to add this names using leaflets??? osm ,postgis
0
votes
0answers
17 views

Python + GME (Spatial Ecology) + Subprocess.call

I'm trying to run the following code to use GME commands in Python. import arcpy,os,subprocess from arcpy import env env.workspace=r"D:\Users\myname\Desktop\aviso" count=0 for raster in (f for f in ...
1
vote
1answer
29 views

Why is arcpy.da.SearchCursor code giving AttributeError: 'int' object has no attribute 'split'?

I am new to python and am trying to get a string field in a geodatabase table to split and create a new row. Here is the code based on the solution from Splitting strings into new rows, retaining ...
2
votes
1answer
37 views

Defining projection, reprojecting, and wrong area values [duplicate]

Apologies for duplication--this was mentioned in a previous post, but was suggested that this specific problem should be posted separately. My data: http://water.usgs.gov/GIS/dsdl/aquifrp025.tar.gz ...
1
vote
0answers
16 views

ArcPy Multiprocessing 000714 - Working in Debug Mode

In an attempt to render an interactive window via matplotlib I am using an out of process script in a toolbox. If I debug the script, it is possible to step through and render the window as expected. ...
0
votes
1answer
14 views

Dealing with custom projections (from prj file) in PostGIS (also GeoServer and OpenLayers)

Basically I want to perform spatial queries like distance calculations in PostGIS using data from shapefiles with different projections, some of which have no SRID code that I can find and also which ...
0
votes
0answers
11 views

Trouble with r.out.gdal in GRASS GIS

I'm processing some landsat 8 files. I'm using this scene LC82260982013325LGN00 and I have to apply i.landsat.toar and export the result as a GTiff. However when I use r.out.gdal it takes a very long ...
4
votes
0answers
36 views

What are the pros and cons of forcing square pixels on reprojection?

I am using Erdas Imagine 2014 to reproject 4-band raster data from GRS 1980 NAD83 Lambert Conformal Conic (ft) to UTM GRS 1980 NAD83 North UTM Zone 11 (m). Unlike ArcGIS, Erdas provides the option to ...
0
votes
3answers
25 views

Using search cursor to determine renaming of feature class

What I am trying to do is create a list of shapefiles based on field name values. From there I would like search on 1 field (each shapefile will only contain 1 row) and if the value in that field is ...
1
vote
1answer
29 views

Accuracy issues between data in QGIS and Google Earth

Wondering if anyone can answer this question. I have a kml in Google Earth. When I import it to QGIS, and then import the Google Earth images they are in slightly different places. I used a QGIS ...
2
votes
1answer
13 views

Print Maps - OpenLayers, GeoServer, GeoExt, MapFish

Can anyone point me towards a clear and unambiguous description of how to install and code a very simple map print function for OpenLayers/GeoServer? I am using GeoServer 2.5.2 and OpenLayers 2.12 on ...
0
votes
0answers
10 views

Neighbours list extracted out of polygon regions

I've got a SQL database which contains some coded polygon structures. Those can be extracted as follows poly <- data.frame(sqldf("SELECT ST_astext(geometry) FROM table")) The data.frame 'poly' ...
1
vote
0answers
11 views

Local Coordinate System

I am currently evaluating the use of PostGIS (version 2.0) for: a project that will store 3D coordinates (x, y, z) data the data will have it's own local coordinate system which does not correspond ...
0
votes
0answers
10 views

QGIS error when add WFS

I'm running QGIS 2.4.0-Chugiak on win7 64bit and am getting the following error while trying to add a wfs layer (using the simple Add WFS layer command): The layer ...
1
vote
1answer
15 views

Couldn't load SIP module (QGIS doesn't load Python)

I recently installed QGIS 2.4, but Python does not load. I am running on a Windows 64 bit machine. I receive the error message "Couldn't load SIP module Python support will be disabled". Traceback ...
0
votes
0answers
20 views

Shapefile to KML automatic updates (ModelBuilder)

I am trying to set a model to where it can automatically update a KML only when there are new features added or modified to my shapefile. Trying to avoid having to convert periodically. Can anyone ...
0
votes
0answers
8 views

QGIS/TileMill/Mapbox - How to downscale grid points or another solution?

Alright, I'm a web developer new to this field, I have the following issue I have built a python based tool that converts netcdf data to csv datetime|lat|long|value - it works great. Problem is the ...
0
votes
0answers
13 views

Qgis - Labels automatically resize to fit within the polygon

I wonder how to automatically resize labels of polygons so it can fit inside them and do not exceed their fronteriras nor be hidden
1
vote
0answers
21 views

Snap (editing tools) in ArcGIS not working properly

I am using the snap tool to match one polygon file to another, using the EDGE Snapping Environment Type Option. The tool appears to work properly for the vertices of the input feature polygons that ...
2
votes
0answers
17 views

Is there a difference between the Planchon & Darboux and Wang and Liu depression filling algorithms? Other than speed?

Can anyone tell me, based on actual analytical experience, between these two depression filling algorithms, other than speed? A fast, simple and versatile algorithm to fill the depressions of digital ...
1
vote
0answers
14 views

ora-01747: user.table.column, table.column or column description is invalid

everyone. I created a table in oracle with a sde.st_geometry column. I followed the instructions of ArcGIS help to register the table into geodatabase. However, when I try to load data into this ...
0
votes
1answer
6 views

What to do in CartoDB so that null/zero values are not shown on the map?

I've created a map and want to present some data with the bubbles (supply-demand), but in some locations the supply is zero. I don't want the bubble to be on the map in those cases. How can I do it? ...
1
vote
1answer
38 views

Controlling Python Version from ArcGIS?

I am writing a VB.net console application that calls ArcGIS Desktop 10.1 ArcToolbox geoprocessing tools from my code. Some of these tools use Python syntax and I am encountering a problem that I ...
0
votes
3answers
37 views

Adding XY Points to ArcMap 10.2

I am trying to import an Excel table with around 10,000 XY points into ArcMap 10.2. I am using State Plane NAD 1983 Alabama West (US Feet) as the Coordinate System in my map data frame. I then add the ...
2
votes
2answers
56 views

Using multiple wildcard parameters with arcpy.ListFeatureClasses

I know there has to be a way to do this but I'm having trouble figuring out how to do so. I would like to create a list of feature classes to perform operations on however, I want to have the list ...
0
votes
0answers
7 views

Is it possible to leave a field null when using the calendar widget in QGIS?

I'm creating and editing data with QGIS, the data is stored in a Spatialite database but I've run into this issue with shapefiles as well. I have a field I'm storing dates in and I want to use QGIS' ...
0
votes
0answers
19 views

What projection to use with Mapbox base/reference layers?

excuse me if this has been asked before, but I can not find answer after heavy googling. What coordinate system/projection does shapefiles need to be in to be alligned correctly with mapbox reference ...
2
votes
2answers
69 views

Does ArcMap have a Pan To Layer command?

In an Attribute Table, I am able to choose Pan to Feature (rather than Zoom to Feature) to refocus the map without changing the zoom level. Is there a similar Pan to Layer option (and/or shortcut key) ...
1
vote
2answers
24 views

Identifying my coordinates from external datasource

I'm working with data received from an agency outside of my office and two columns in the dataset are labeled 'CompX' and 'CompY'. Here is a sample set pulled from the spreadsheet: ...
0
votes
1answer
39 views

Cannot put a layer name as the same as the raster name just created by Python script

I have a question regarding Python script for making a Heat Map Tool. I am making a Heat Map Tool where users can set the map extent, the tool will read the current scale of the map, then make a ...
0
votes
1answer
30 views

Field Calculator not showing some fields

When I open my attribute table, click on a column, and select Field Calculator it opens and doesn't list all of the Fields in my attribute table. Why can't Field Calculator find these Fields?
0
votes
0answers
7 views

Openlayer 3 interaction Select Problem

i have a problem as a short and clear. When i use the snipped code var select = new ol.interaction.Select({ condition: ol.events.condition.mouseMove }); base map's mouse click drag is ...
2
votes
0answers
32 views

Join CSV using gdal/ogr

Forgive what may be a silly question, but I'm not much of a gdal/sql guru. I'm trying to use gdal/ogr to join a shapefile called myshape.shp with a csv called mycsv.csv. The join field in the shape ...
0
votes
0answers
17 views

Point to polygon depending on attribute value [on hold]

I have point feature layer with FId as one of the attribute. I need to create polygon layer around the point with same FId. Suppose I have 5 points with FId 102 then it should form polygon around ...
0
votes
1answer
6 views

Error XMLHttpRequest cannot load openlayers geocode

I'll make a page for viewing routes with openlayers, postgresql / postgis and pgrouting. The part of the seat is already ok, I'm using OSM data. The image below is to illustrate what I'm doing now: a ...
0
votes
1answer
43 views

Cannot obtain correct area values *With* correct projections

I'm trying to get the percentage of each U.S. county overlaying groundwater (data from the census and USGS respectively). They're both polygons. I have 1) correctly projected the data and the layer ...
1
vote
0answers
11 views

QGIS strongly offsetted symbols for categorized layers not visible on layer list (layer panel)

I am constructing a symbology for telecom analysis, which so far is mainly point and line features. So far it is working very well except that I have to offset the symbols to be able to avoid ...
-1
votes
0answers
15 views

How to use merge tool (editor tool) in ModelBuilder? [on hold]

I am facing some problem in ModelBuilder. i want to merge selected roads in same layer in ModelBuilder. can u explained how to do this... And 2nd one how to use Editor tools in ModelBuilder?
0
votes
0answers
4 views

change symbology of an graduated renderer in qgis

In my plugin(c++) I add a vectorlayer to map, then I change the symbology of the QgsGraduatedSymbolRendererV2 of this layer. After this I refresh the map with ...
0
votes
0answers
15 views

Openlayers edit feature attributes via popup

I need help. I am working on web map with openlayers. I'm not a programmer and I've never used openlayes before, so my knowledge is limited. My map contains WFS protocol and everything in connection ...
1
vote
0answers
6 views

QGIS SimpleSymbolRenderer label for Symbol in Legend

Is there an ability to set a label for the symbol (in QgsSingleSymbolRendererV2) which is showing in the legend?

15 30 50 per page