2
votes
1answer
496 views

Creating a geoserver layer with curl (but with a bounding box)

I'm attemping to load a layer into Geoserver from a PostGIS database using cURL. It works, but I also need to set the bounding box to -180,-90,180,90. Does anyone know how to add the bounding box to ...
14
votes
2answers
4k views

How to count and rasterize polygon overlaps in ArcGIS Desktop?

How do you take a vector layer with overlapping polygons and turn it into a raster where each cell counts the number of polygons containing that cell? We are looking at polygons of fire burn areas ...
0
votes
1answer
65 views

Probelm with Add Network Analyst dll in My Web Mapping Application adf?

I'm a beginner in ArcGIS & I'm shooting blind really. I want to add the Network Analyst tool box to find the shortest path in my project. I tried this solution: I can't add Network Analyst dll to ...
2
votes
1answer
5k views

How to Create Drop Down List Variable with ModelBuilder?

I am building a model and am trying to create a variable (that will be turned into a parameter and then added as a field) that is a drop down list where only specific values can be chosen. Any help ...
1
vote
1answer
421 views

Which horizontal unit is used on the table of the Profile Tool?

Does anyone knows what horizontal unit is used on the table of the "Profile Tool". Vertical is in meter but I don't know about the horizontal axis. Knowing the length of my profile, I tried to divide ...
3
votes
0answers
82 views

What is a shaved polygon?

Just trying to find a definition. I was asked this in an interview and I assumed it was a polygon created by incorrectly modifying a another polygon in a coverage. According to my best googling ...
1
vote
1answer
754 views

PostGIS spacial data type to represent geo-located polygons

I have a PostgreSQL database with circle shaped objects called 'spots'. Each of those objects has latitude, longitude and a variable radius, information that I need to define this circles. Given an ...
4
votes
2answers
303 views

Which Geodatabase supports SQL and is easily portable?

I want to choose the geodatabase type, which could be: permits direct sql queries. easily portable, because the app would installed in one computer. I know that the personal geodatabase is a good ...
1
vote
1answer
189 views

Use Java to automate service creation and display up to date data on map?

Our team is using ArcGIS and our requirement is To create a web application in JAVA with a map displaying various data from DB. The data gets updated periodically in the DB and the map should ...
1
vote
0answers
106 views

How can I snap 2 lines in QGIS so the st_distance between them is 0?

Sometimes when I snap the ends of 2 LineStrings together and I check the st_distance between those endpoints I get a value in the order of 1.1E-10 while at the same time when I check for equality of ...
3
votes
1answer
3k views

How to import ESRI grid into Matlab

I have some ESRI grid data that I would like to import into Matlab. As a typical ESRI grid data I have the two folders with the *.adf files and *.dat, .nit and.dat files. I would like to know how ...
7
votes
1answer
3k views

Leaflet and EPSG 4326 Projections

UPDATE: LEAFLET fixed support for EPSG 4326 (LL84) in the latest betas: https://github.com/Leaflet/Leaflet/issues/1207 Leaflet says it supports EPSG 4326 (Plate Carree, aka ll84) projections. I think ...
1
vote
0answers
98 views

Are multiple separate feature classes more efficient than repeatedly deleting all features from the same feature class?

Quick Version: Is it more efficient, in terms of database performance, to have multiple separate temporary feature classes or one feature class that you repeatedly empty out and fill? I am working ...
2
votes
2answers
193 views

Showing OpenStreetMap intersections in ArcMap?

I'm trying to carry out a few tests on OpenStreetMap data to test its quality, using ArcGIS. One of the things I'd like to investigate involves checking that all road intersections are represented ...
1
vote
1answer
77 views

Status of the TMS specifications

I am trying to implement some TMS specs as per http://wiki.osgeo.org/wiki/Tile_Map_Service_Specification. I am particularly interested in the service discovery part ( and ). The page is very clear ...
2
votes
1answer
2k views

QGIS Python version

I have brewed python 2.7.3 onto my Mac (Lion), and installed shapely via pip install shapely. The Polygonizer plugin, however, does not find the shapely library. I see when QGIS loads a Python console,...
2
votes
3answers
4k views

Joining attributes of polygons and points by location in QGIS

I have two shapefiles.... points containing a number field 'response_time' a polygon grid of square polygons containing fields including 'PNTCNT' with the number of points per polygon, calculated ...
0
votes
1answer
316 views

Clip data and add layer to second dataframe using python Add-In

I want to clip a layer from data frame 1 and add it to the data frame 2 using the following script. But instead it just add all grids to current data frame 1 and don't update data frame 2. Please ...
1
vote
2answers
1k views

Creating MapTips programmatically for programmatically-created KML layer using ArcGIS API for Silverlight?

The few examples and forum posts that I have found all use KML layers defined in XAML at design-time with nested MapTip templates binding to one or more Placemark attributes e.g. name or ExtendedData ...
1
vote
1answer
1k views

How to zoom to point boundary using OpenLayers?

I'm wondering what the best strategy to position a map that has two points, using OpenLayers is. At the moment, my approach is to calculate the mid-point of the two points, and to zoom the map to that ...
2
votes
2answers
369 views

Why ST_Intersects() returns one row more than expected?

I am trying to understand the behaviour of ST_Intersects() in PostGIS. My goal is to get the mean value of a raster area corresponding to each polygon in a vector layer. To test my SQL I run ...
2
votes
1answer
213 views

filter / generalize elevation points on the basis of some conditions

I wanted to generalize many elevation points in a rectangular area (about 700 square km). I need to take about 3 points for square km. These points must satisfy some conditions: One of these ...
2
votes
1answer
456 views

Why doesn't PostGIS use gist index when doing a ST_DUMP(ST_UNION)?

My query: DROP TABLE IF EXISTS tmp; CREATE TEMP TABLE tmp AS SELECT *, ST_BUFFER(the_geom::GEOGRAPHY, 3000)::GEOMETRY AS buffer FROM af_modis_master LIMIT 20000; CREATE INDEX idx_tmp_the_geom ON tmp ...
8
votes
2answers
340 views

How to include streaming media into an OpenGeo system to monitor live-tracked animals?

I am wondering how to include streaming media (video), or camera feeds, into an OpenGeo system to monitor live-tracked animals. I am currently doing so with different applications, but I want to do ...
3
votes
1answer
5k views

How to find out whether a lat/long position resides within a Polygon?

I'm working on a system that stores latitude/longitude information of addresses in a PostGIS table. To store Lat/Long in geometry data type I'm using ST_GeometryFromText function. For example the ...
0
votes
1answer
521 views

Does QGIS support vector Rubbersheeting? [duplicate]

The task is to rubbersheet two vector layers one with a projection like UTM WGS 84 Zone 45N
1
vote
1answer
979 views

ArcGIS API Javascript - FeatureLayer from json: problem with queries and popup

Hello everybody I've tried this code proposed by Derek Swingley in JSFIDDLE: JSFIDDLE-FeatureLayer from JSON Everything "seems" to work fine, but not always. If you go down to the closer scale (level ...
1
vote
0answers
54 views

Spatial adjustment for vector shp files in QGIS [duplicate]

How to do spatial adjustment for vector shp files in QGIS? I have a set of 4 cadastral maps of adjacent locations. I have converted them form DWG to DXF and then to vector shapefiles. They are not ...
0
votes
2answers
1k views

Is there any API in C# for Zooming selected feature?

I am new to ArcGIS and want to implement the Zoom to Selected Features functionality available in Selection menu option (Selection-> Zoom to Selected Features), using C# API. Is any API available in ...
14
votes
1answer
773 views

The next big thing in standardized spatial data exchange format?

I remember reading something a few months back, in the latter half of 2012, about a coordinated group effort to design a new standard for sharing geographic / spatial data. It has or aims to have the ...
7
votes
2answers
869 views

Where can I find Population data for all UK Counties?

Where can I find population data (male, female, total) for all UK counties for last 7 decades, i.e. 1950,1960,1970,1980,1990,2000,2010. I tried my luck with Office for National Statistics and UK ...
4
votes
2answers
1k views

MS Access and geocoding in ArcGIS

We are a small non-profit. We use a fairly complex MS Access application to track everything. We would very much like to geocode addresses in our application and display the results on a map. In ...
4
votes
2answers
330 views

Is it possible to get Elevation from a Satellite Image?

I would like to get elevation from a satellite image. I would be needing resolution less than or equal to 5 m. Is this possible? If yes, how can I procure these images and where?
2
votes
0answers
344 views

Running a new iteration for each column of a dataset in ArcGIS

I'm pretty new to Modelbuilding, having just been turned onto it about a week ago on here. So my problem is, I currently have a dataset of habitats that change through time (from Immature to Mature, ...
1
vote
2answers
735 views

How to use a hillshade dataset in QGIS?

I received “Hillshade” data that I'm trying to use in QGIS. When I check the "Pseudocolor" option under "Color map", I get many colors, apparently corresponding to the terrain, though it doesn't ...
3
votes
1answer
405 views

Copy two datasets that particpate in the same relationship class

I have an ArcSDE GDB that looks something like this: ++ GDB +++++ Dataset1 ++++++++ FeatureClass1 ++++++++ FeatureClass2 +++++ Dataset2 ++++++++ FeatureClass3 ++++++++ FeatureClass4 +++++ Table +++++ ...
0
votes
1answer
270 views

“TypeError: this.options is null” in OpenLayers.Protocol.HTTP‏ [duplicate]

I'm using OL 2.11 with GeoExt 1.1. After testing and modifying this GeoExt example: http://geoext.org/lib/GeoExt/widgets/form/FormPanel.html, I had problems with destroying and reading the new ...
0
votes
1answer
90 views

Error while publishing a mxd as service uing python

I have created an Excel file with Lat/lon values. I added this data tas a layer in the ArcMap. And I "used Display XY data" otion available on right click. I selected the GCS_WCS_1984 co-ordinate ...
1
vote
1answer
67 views

How to make sure that geometries copy the relationship of corresponding tables?

A make a database in PostgreSQL (9.2.2)/PostGIS (2.0.1). I'm new to it, so I'm not sure how to make sure that geometries corresponding to main table (polygons or points) cover the geometries ...
0
votes
1answer
6k views

Calculate maximum and minimum elevation for a polygon layer from a DEM [duplicate]

I have a polygon layer and would like to know the min and max elevation within each polygon. My elevation layer is a digital elevation model. I'm not quite sure how to extract that information. I am ...
2
votes
1answer
3k views

How to setup proxy and use “POST” method when executing Geoprocessing Service in ArcGIS Server Javascript API

I am passing five featuresets to a ArcGIS Server Javascript API. When I do that I get 'Deferred Object not defined error'. Then I tried to use dojo.Deferred(). At that point the error goes away. But ...
3
votes
1answer
60 views

What is the max. length of string for GP output?

I have an XML as the output of Geo-processing tool. I am keeping it as a file right now but another developer wants it as return value. So what is the maximum possible length of this String output? Is ...
0
votes
1answer
77 views

Does anyone know of an explicit formula that I can plug-n-chug with to convert WGS84 lat lon to kilometers or miles? [duplicate]

I have a lot of lat lon coordinates in WGS84 format and I'm trying to get those into kilometers so that I'm able to calculate distance.
1
vote
1answer
7k views

ArcMap10: Changing transparency of a polygon affects symbol in table of contents but not in the map

I am working with polygon shapefiles both that I have created and that colleagues have sent me. When I try to change the transparency of the polygon through Layer Properties > Display >"Transparent: ...
0
votes
0answers
43 views

esri ArcObjects slow performance accessing features [duplicate]

I have to create my own control like Attributes Table using C#. My version of attributes table is very slow, for ex. for 300.000 rows in table and 140 fields it takes about 1 minute! esri Cursors are ...
1
vote
2answers
2k views

Can you use arcpy.Copy_management() with in_memory tables?

I have a table in an ArcSDE GDB I'd like to step through using Python. For performance reasons I wanted to load it into memory like so: arcpy.Copy_management('C:/GDB.sde/MyTable', 'in_memory\\...
2
votes
1answer
196 views

How to symbolize points using line symbols of varying rotation and width?

I've been along a stretch of coast and recorded the orientation and thickness and locations of several igneous intrusions. I've managed to set up a project in QGIS with a point for each intrusion, ...
2
votes
4answers
1k views

Why does QGIS not detect the CSV/DBF column headers?

I am trying to import a csv or dbf into qGIS so I can perform a join on a shapefile. However, qGIS is not detecting the first row as header names. I know I've done similar joins before and there's ...
11
votes
2answers
961 views

What countries allow commercial use of drones to collect aerial imagery?

Currently the US government forbids commercial use of drones to collect aerial imagery. The FAA is supposedly reviewing this to determine what sorts of restrictions are needed to allow this to happen ...
2
votes
2answers
252 views

How can I import ALOHA .pas plume file into QGIS?

I am trying to find a way to import ALOHA's plume model (.PAS) into QGIS? I have not been able to find anything showing how to accomplish this outside of using ESRI-based tools.

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