1
vote
1answer
59 views

Query data without opening up database?

I have a bunch of polygon data that I want users to be able to sort/filter based on certain criteria. I have the data in a CartoDB table, and can pretty easily use some SQL calls to achieve what I ...
2
votes
1answer
580 views

Using ogr2ogr to download GeoJSON files from ArcGIS MapServer

I am trying to download as a GeoJSON file a line feature from a ArcGIS MapServer REST Service run by the National Park Service (link is here) so that I can open the data in QGIS. Using the guide ...
2
votes
1answer
623 views

Layer missing Native SRS in geoserver

I'm currently trying to get a couple of layers uploaded to a geoserver and I'm having trouble getting the projection recognized. The result of the curl command is that the two layers are both missing ...
2
votes
2answers
393 views

Issue On Having HomeButton and Overview Together on ArcGIS Sever JavaScript API

Using ArcGIS 10.1 and ArcGIS Server Javascript Api I am having issue on having Home Button and Map Overview on the map. for what ever reason the home button is not showing up the map Here is the ...
2
votes
1answer
632 views

POSTGIS: function st_collect(geography) does not exist

I am trying to use some Geography functions, but I am getting an error that (all) functions are not existing. I have checked other Stackexchange posts (e.g. this one), but the solutions did not work ...
3
votes
2answers
862 views

Tuning Esri Geodatabase on Oracle Spatial (SDO_Geometry) performance?

We are storing data in a Geodatabase on Oracle 11g using Oracle Spatial with SDO_Geometry, and then consuming that using ArcGIS server 10.2.1. The performance is very slow, because we are talking ...
7
votes
6answers
4k views

Continuous color band for a raster legend in QGIS composer legend

I'm looking for a way to insert continuous colour legend for a raster layer. I managed to create discrete symbols with values along the bar, but I would like to have a continuous bar with some values ...
1
vote
2answers
277 views

Help, I have 10,000+ .shp files covering 3 UTM zones with unknown projections

I was handed a ton of property files with no projections attached but was told they are all in UTM zone 21S. Well once I merged them all together and projected them I realized that the data covers 3 ...
3
votes
2answers
86 views

How <-> operator work?

I'm doing a search to find links close to a point. The problem is if i limit to 20 result i found the closer link at 6mts but if i limit to 10 result that link doesnt appear and the closest link is ...
2
votes
1answer
133 views

Can you do ST_Transform on geographies?

I am brand new to postgis. I just learned that geometries model simple cartesian objects and that geographies model shapes on the surface of the earth. I have a bunch of data in columns X and Y of a ...
0
votes
1answer
303 views

Clip and ship by a queried layer extent and by user defined extent

I am trying add a functionality to the clip and ship script. I would also like the users to extract data by the extent of a queried feature layer. For instance, if County = "Alameda" then extract data ...
0
votes
1answer
83 views

GeoServer container need to test locally?

GeoServer container need to test locally I did some tests with geoserver and openlayers but it did not work with the layers I have on my machine. I did not need the container to use locally calling ...
0
votes
2answers
108 views

Is there mathmatical function/equation available for ArcGIS Network Analyst's Closest Facility Method?

I would like to use this function in other statistical programming, ideally SAS where td = (whatever the function is to calculate total distance from centroid of county to facility). The goal is to ...
1
vote
1answer
87 views

Extract information of a raster overlayed on another raster with a lower resolution directly in python

I have two aligned rasters with the same extent, one has a resolution of 5 meters and the other of 125 meters. I would like to place the 5 meter one over the 125 meter one and assign to these smaller ...
0
votes
1answer
32 views

Join text with layer

In Mapinfo it´s easy to link a text-layer with a geometric layer by attributes with outcome as a new layer. Where and how to do this in Q-GIS?
2
votes
1answer
163 views

Map algebra for loop

I have never coded in Python before and I am trying to loop a simple map algebra equation across 365 rasters. I am trying to calculate total water flow over cells but in the raster I have a negative ...
0
votes
1answer
100 views

How can I show a interactive map?

I am trying to develop a web app like this. That is, I want to show a map with points and when the users clicks on a point, it should display some information about it. Can I do that with TinyOWS? ...
2
votes
1answer
155 views

Inserting union of two tables into another table Postgresql

I am working on a research project. I have two tables, one of a polygon that represents a severe weather risk area, one that represents the US. I want to merge them into one output polygon. I am stuck ...
4
votes
1answer
616 views

How do I convert Eastings and Northings projection to WSG84 in geopandas?

I'm very new to projections and struggling to convert a map dataset from OSGB36 (Eastings and Northings) to WGS84 (lat/longs). I've used geopandas to import a shapefile. Now I want to export it as ...
1
vote
1answer
1k views

How to make polygon volume in TIN surface?

I want to measure surface volume of an area in different elevation layer. For measuring the surface volume I have to make a Polygon Volume as well. I have problem with making this polygon over the ...
3
votes
1answer
3k views

How to change line thickness of multiple symbols without altering other properties?

I want to change all of my line thicknesses in of my symbology to a 2 within the same feature class. I have about 30 lines. Right now, I have to change it separately with each line. Is there a way ...
0
votes
1answer
35 views

pgrouting crashes and restarts the postgresql server when searching for endpoints in 2 disjoints graphs

I have >apt-show-versions postgresql-9.1-pgrouting postgresql-9.1-pgrouting/precise uptodate 2.0.0-release-ppa1~precise2 Whenever I do a search http://docs.pgrouting.org/dev/src/astar/doc/index....
1
vote
1answer
132 views

Transect with square polygons

would like to create with QGis 2.2 (german version) several square polygons (1km ²) that seamlessly connect to each other, so that a strip ( transect ) of 9km times 1km length results . ( I once ...
1
vote
0answers
34 views

Move and zoom map-layer while editing

I want to create lines with the help of "CAD-like improved line capture", make a point, pretend an angle or distance want to put the second point. To this end, I have to zoom out on the map, select a ...
0
votes
1answer
126 views

Understanding WFS Metadata

I get the concept of what a WFS is supposed to accomplish and how it does it however I can't seem to find any clear insight into how it handles feature metadata. GeoJSON has a properties attribute for ...
3
votes
2answers
552 views

How can I GROUP BY linear spatial clusters with PostGIS?

I have a series of points in a horizontal line, arranged into discrete spatial clusters by the underlying data pattern. Here's an example of what they look like: How can I use PostGIS to group them ...
1
vote
1answer
212 views

Popup design change

I am trying to put another link (Notes Methodologiques) next to "Zoom to" in InfoWindowLite popup window but I don't know how I can have them in the same area. What I have right now looks like this: ...
1
vote
3answers
4k views

How to convert UTM coordinates into Decimal Degree coordinates?

I work on QGis 2.0.1 - Dufour on Macintosh OS X Mavericks. I have UTM coordinates (XXXX and YYYYY) in a table (with one column of X and an other one of Y). I need this coordinates in Decimal Degree. ...
-1
votes
1answer
4k views

Opinion of using Google Earth Pro vs ArcGIS Explorer [closed]

I would like to hear from anyone who uses either or both Google Earth Pro vs ArcGIS Explorer. The reason I am asking is because our agency has a very limited of budget to purchase license for each ...
0
votes
1answer
82 views

Retrieve path of running plugin in QGIS

In my plugin's directory I've got some XML settings files that I'd like to parse at a particular point during execution of the plugin. Is there a way to get the absolute path where the plugin's .pyc ...
12
votes
2answers
1k views

Is there a way to refresh imported modules in a ArcGIS Python Toolbox?

When using a python toolbox (.pyt) in ArcMap, I'll typically follow a pattern where the .pyt file itself is simply a wrapper to collect input arguments and define the tools themselves. Supporting ...
0
votes
1answer
214 views

Geoserver 2.4.5 with Openlayers 2.13.1 overlay WMS layer

I'm using GeoServer with OpenLayers, happens that my WMS layers do not appear. Do I need to overlay a WMS layer in PostGIS that I have with google maps api and does not work appears in WMS layer ...
1
vote
1answer
619 views

How to create graph out of two layers using ArcGIS 10.1 for Desktop?

I would like to create a graph of two layers I have. on one hand its the land price of a certain area and on the other a layer with a crime rate. first of all, the layer with the land prices doesnt ...
1
vote
1answer
2k views

Fill sinks error in arcHydro

I am working on a project that is modeling runoff at a county level. The DEM used is lidar derived and has a 5 ft resolution. The general workflow I am flowing is Sink evaluation Sink Selection (to ...
1
vote
1answer
906 views

Can't select layer in the Road Graph plugin QGIS

I'm trying to use the Road Graph plugin in QGIS 2.2.0. I have tried a few line shape files, but it won't let me select the layer (the option is greyed out). I've tried adding a 'SPEED' field and a '...
2
votes
0answers
125 views

Compare line with next line in attribute table shapefile

I am making a python code for ArcGis 9.3. The aim is to compare the value of my field "ID_BV" at line l with value of field "ID_BV" at line l+ 1. And depending of the test answer i populate another ...
1
vote
1answer
117 views

Debugging ERROR 000358: Invalid expression from SelectLayerByAttribute? [duplicate]

I'm creating a script tool and using the SelectLayerBy Attribute function (below), arcpy.SelectLayerByAttribute_management("cities_lyr", "NEW_SELECTION", '"CRIME_INDX" <= 0.02') However, I keep ...
0
votes
1answer
132 views

Splitting hexagonal grid into segments, dissolve by location

I am a little bit frustrated because I want to do something I did 5 years ago and I can't figure out how to do it again. I am creating a turnover map of species communities using R and ArcGIS 9.3. As ...
0
votes
0answers
73 views

MapInfo - writing text using polylines

I am looking for a way to create text on a MapInfo layer using Polylines. So on a MapInfo layer, I need to create a line dataset, but I am after forming words - labelling items is not going to work ...
2
votes
1answer
203 views

Can you create a CRS of superseded NSW Datum

I want to use a superseded projection (NSW integrated survey datum - referred to as ISG) because my main client utilises it. The projection is based on AGD66. We regularly receive survey files in this ...
1
vote
0answers
206 views

model to connect points with line and set the digitize direction according to height

I'm trying to develop a tool that connects a point layer (manholes) with lines (waste water pipes) and sets the line direction according to an height attribute acording to gravity(from high to low). ...
1
vote
1answer
861 views

How can I make a reference plane to measure surface volume?

I am looking to make a reference plane like the links below. I want to measure surface volume of an area in different elevation layer. I just need to know how to make the reference plane in ArcGIS ...
1
vote
2answers
619 views

Missing Dependency in SAGA. Orfeo Toolbox does not work

Hej guys, I am trying to perforem segmentation from Orfeo Toolbox (QGIS last version 2.2), whenever I try to use the toolbox, I get the following message: Oooops! The following output layers could ...
0
votes
0answers
706 views

Place arcgis layer on top of google map

This is my old code that loaded arcgis layers on top of the arcgis map: function init(mapServer) { map = new esri.Map("map", { basemap: "topo", //...
2
votes
2answers
1k views

Convert DWG/shp format for Openlayers

I need to convert DWG/shp files to some vector data file that is supported in Openlayers (e.g KML,GML). I tried following this guide but it doesn't work. Please advise me some converter (not ...
2
votes
1answer
2k views

Landsat Observation Zenith and Azimuth Angles

I am doing a project with Landsat which needs to find out 2 Landsat images of the same area for different time, have both the same observation zenith and azimuth angles. But I can not find any ...
4
votes
1answer
738 views

How to write labels with varying significant figures/decimal places?

I have results that range from ex. 113,009 down to 0.00495 - Can someone recommend a way to write/construct a label expression for the following in ArcMap: • If less than 1, use 2 decimal places (...
1
vote
1answer
71 views

Lost geometry when joining spatial and non-spatial tables

I have two tables I am joining: 1 spatial (Table 1) and one not spatial (Table 2). Table 1 looks like this: | ID | geometry | Table 2: | ID | ... | When I perform the query: CREATE TABLE AS ...
1
vote
1answer
368 views

Python syntax error -can't figure out why? [closed]

This should be simple. I hope I don't get down votes! I just got the following code from an article about using Google Maps API and ArcGIS to calculate routes without network analysis and just can't ...
1
vote
2answers
257 views

Matching Landsat 8 with previous Landsat images

I am working with Landsat 8 in ENVI. My image's dimensions are 8921 x 13131. I need to apply a forest mask to this image with dimensions of 8805 x 12321. I try to resize an image, but it doesn't work. ...

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