3
votes
1answer
666 views

ArcGIS JS API - Can't draw results of Query Task

I have an ArcGIS JavaScript map that I'm trying to use with a Query Task. The query runs fine on the server side and the proper geometry is returned. Then, I draw the feature as follows: var features ...
9
votes
10answers
15k views

Changing data type in ArcGIS attribute table?

How can I change the data type in an attribute table in ArcGIS for multiple fields? For example, if the fields have been exported as a string from Excel, and I would like to use them as numerical ...
1
vote
0answers
30 views

Cannot publish service with editable layer

We have several services published, up and running for our on-line viewers. However, we are trying to publish a service containing our bus stops, that can be brought up on a mobile device for editing ...
3
votes
2answers
424 views

How to export a vector layer to a new layer and take extent from canvas?

I want to create a new vector layer based on an existing one and the extent should be based on the current extent of the canvas. How do I do that? Edit: I am looking for a quick way to do that (a ...
1
vote
1answer
344 views

Open/Free Area Code Shape Files for the US/Canada

I would like to map magicJack's areacodes and exchanges against known area codes and exchanges to create a coverage map, just to see what it would look like as compared with, say, a mobile phone ...
1
vote
0answers
59 views

style manipulation using Google Earth api

I am creating data in QGIS and then serving it using GeoServer and displaying using the Google Earth api. Is there any way to access the styles using a JavaScript api and alter the look and feel of my ...
1
vote
0answers
168 views

Problems with SEXTANTE

maybe the answer is somewhere, but i can't find it right now... I'm getting problems with SEXTANTE and algorithms with GRASS, SAGA... Always is the same, they can't open the files, the error is the ...
3
votes
1answer
1k views

ArcGIS 10.1 Python Script tool wont read string variable in SQL statement [duplicate]

I am working on a simple script tool that selects features from a .shp and creates a new output with only those features. Basically the user specifies(from a drop down list) the county and the ...
0
votes
0answers
82 views

Merge (a lot of) features using QGIS or other open source

I have one shape-file with a lot of features (polygons) and if I try to merge these into one big polygon in QGIS it takes days to complete the merge. So I wonder if there is another way? I saw this ...
1
vote
2answers
874 views

Local Map Web API Without internet connection

I have a single-page HTML5 app that consumes a bunch of different map providers. One of my requirements is that this work with no internet connection and some sort of map provider running on the box ...
1
vote
1answer
1k views

Check if feature is selected (Openlayers)

I wonder if there is a way to check whether a pointfeature (OpenLayers.Feature.Vector) is selected. I read the API, but didn't find any solution. Any idea?
7
votes
3answers
3k views

Best way to clip a large raster ECW file ?

I am trying to clip a large ECW (details below) but the raster file is too big to be processed entirely. Some details of the ECW below Driver: ECW/ERDAS Compressed Wavelets (SDK 5.0) file size: ...
1
vote
0answers
462 views

How do I load offline google map/earth vrt files as a backdrop in qgis

I was trying to follow the process : saving-google-earth-location in order to cache google maps/earth offline for digitizing, but I am fairly new to qgis. When I try to add the vrt file as a raster ...
1
vote
2answers
89 views

How to find out to which road each points belongs to?

I am new to GIS . I hava a folder it include a .mxd file and a .gdb folder, the .gdb folder hava many .gdbtable and .gdbindexes files etc, it's a road network data of a city. Now, I want to know ...
6
votes
6answers
3k views

Impossible to sum rasters because of nodata pixels

I have a set of rasters (.vrt) with daily soil moisture data. I want to sum the pixels of all rasters in order to have a measure by month. However, the whole world is not covered each day, which ...
3
votes
2answers
178 views

What is the best plain text format for georeferenced raster data?

I have to translate satellite images in a file in .txt format or another, such as Excel or .csv, in which there are pixel values corresponding to (longitude,latitude) couples. What is the best file ...
1
vote
0answers
15 views

How to remove coincident points with z values greater than min for Spline [duplicate]

I am trying to run a Spline interpolation on some terrestrial LiDAR data, but it keeps failing (I'm getting error 010235 - returned error from spline process and error 010067 - error executing grid ...
9
votes
1answer
120 views

Is there a name for a situation when the place is clearly or unclearly named?

This is not specific to any system. Suppose there's a large red rock on a terrain which can be easily found and clearly seen and there's an artificial object such as a mall near that large red rock. ...
1
vote
0answers
26 views

How to send variables from gis addin own web browser to gis file

I am a complete beginner with GIS. So I want to be able to go to the coordinates in arcmap I fill in in my php page. I've got this now: The variables inserted in the textfield should be the ...
1
vote
0answers
94 views

How can i add to DB new created Polygon?

i'm new to LeafLet and i'm trying to understand power of LeafLet for mapping.. Question is simple, let's say i've created a new object(e.g. polygon) map.on('draw:created', function (e) { ...
4
votes
4answers
762 views

How to convert result of dissolved buffer into individual polygons?

I am wondering if there is a way to easily split results of a disolved buffer into individual polygons? E.g in the screenshot below all of these buffers are one item, can I split them into individual ...
3
votes
3answers
942 views

How to access qgis, postgis, etc in ubuntu through Amazon AWS

I'm new to programming; however i have been able to read and research the programs i need to set-up for a GIS system. I chose to use Geoserver (as WMS) Postgresql, postgis, Qgis and Openlayers. I am ...
2
votes
1answer
200 views

Drawing 2 points at the beginning and the end of the LineString

I have LineStrings in a GeoJSON files, in example: ...
2
votes
1answer
299 views

QGIS 1.8 Vector layer from ODBC connection [duplicate]

I have successfully set up an ODBC link from a FileMaker DB to QGIS, and using Layer/Add Vector Layer I can get a layer with a fully populated attribute table listed in the Layers Panel. I now want ...
1
vote
0answers
144 views

How to calculate an expression for a field using PyQgis?

I'm beginner user of PyQGIS. I would like to create one button to calculate one expression for example the relative frequencies for each field. How can i do it? Thanks for your help. Best regards. ...
4
votes
1answer
719 views

Recommended specs for a single-country OSM tile server

What specs would you recommend for an OSM tile server dedicated to serving tiles for a single, small country (e.g., Portugal only)? Total server load is estimated to be no more than two/three users ...
2
votes
3answers
199 views

Problem with deleting features/objects in Attribute Table

I am a new to the field of GIS-Software. So i hope for your patience. English is not my native language so sorry for that too ;). My overall goal is to export a DXF-File with just the special objects ...
2
votes
1answer
263 views

Easiest way to read roads, railroads, buildings from an OSM map

I'm prototyping a Java application, which uses an OSM map of a small city. I need to extract from the OSM map the coordinates of roads, railroads, power lines and buildings. At the moment I'm ...
1
vote
0answers
197 views

OpenLayers - Features in cloned layer changes style with original feature

Please help! My situation is that, I clone() a "newLayer" from an "oldLayer" with its features. Both of them seems correct at first. But then when I tried to change the style of "featureA" in the ...
2
votes
2answers
548 views

Parsing raw data from GPS tracker

As a side project I've been hacking together a simple tracking system for my wayward dog using a cheap GPS / GPRS tracker. I've successfully got it transmitting data to my server over GPRS but while ...
2
votes
1answer
1k views

Problem with loading OSM planet into PostgreSQL

I try download OSM planet into PostgreSQL database. I do all steps from instruction http://switch2osm.org/serving-tiles/manually-building-a-tile-server-12-04/ I also modify string "kernel.shmmax" ...
4
votes
1answer
700 views

Calculate distance to median point for a group of points in ArcGIS 10.1

I have a shapefile called "household_points" of ~2,000 points, which are divided into about 100 sites. The shapefile has a field in the attribute table called "SNAME" and in the field each point is ...
3
votes
3answers
2k views

Converting coordinates: Feet to Degrees-Minutes-Seconds

I have a point shapefile and I want to get the coordinates for each point in Degrees-Minutes-Seconds format. When I use Add XY Coordinates (Data Management) it gives me the coordinates in Feet format. ...
1
vote
1answer
72 views

Error reading database file from: /Applications/QGIS.app/Contents/Resources/resources/srs.db

I've suddenly started getting the following error using QGIS 2.0.1 on Mac: Error reading database file from: /Applications/QGIS.app/Contents/MacOS/../Resources/resources/srs.db Because of this the ...
3
votes
1answer
2k views

QGIS 2.0 without MySQL connector

On a mac (Mountain Lion), after a major upgrade to GDAL (1.10) and related frameworks from KyngChaos page, QGIS 2.0 doesn't show any MySQL connector: Add Vector > Database > ... The driver ...
5
votes
2answers
3k views

Importing .svg images to use as Symbols in ArcMap?

I have several .svg files that I want to use as symbols in ArcMap 10.1. However, I do not see any import feature or the sort to use these .svg pictures.
5
votes
1answer
554 views

QGIS - Changing Legend Size with Python

In QGIS, I use the python console to generate image files through the composer. In particular, I am creating a map with a legend. The legend is too big. It occupies about 1/8 of the image. I would ...
2
votes
2answers
69 views

Points near corner

I have a road network (lines) and some POIs (points). These POIs have the information of street name on their attribute table. I've found that some street name from the POI doesn't match with my road ...
3
votes
1answer
569 views

GeoWebCache seed task dies immediately after being submitted

The data comes from Geofabrik's Brazil slice: http://download.geofabrik.de/south-america/brazil.html Imported into a PostGIS DB with osm2pgsql. GeoServer is 2.4.0, running on latest Tomcat 7.0.x, on ...
1
vote
2answers
186 views

How do I pass an array of map points to a new ArcGIS service I'm writing

So it appears that creating a parameter requires that a Schema be defined in the database. I have Simple_Point and Simple_Polyline defined there already. My parameters are as follows: Parameter ...
1
vote
0answers
142 views

SQL procedure(s) to convert GPS traces to an ordered set of junctions in a network

I have three datasets that I have loaded into a geodatabase (spatialite or PostGIS): A set of GPS points collected from individual trips through urban areas. Points have a unique point id, a group ...
2
votes
1answer
322 views

How to convert format and CRS of many shapefiles to kml (or csv, json..)?

I tried to use QGIS to transform shp files in kml and to translate the CRS to use in a google maps application. My problem is that I have a lot of shp files that i can open in a bulk manner by drag ...
3
votes
1answer
3k views

ArcGIS for Server 10.1, Registering a database data store fails with Underlying DBMS error

When I registered a database data store to ArcGIS Server in ArcCatalog, the following error occurs: The connection property set was missing a required property or the property value was ...
2
votes
1answer
121 views

How to format raster legend in QGIS?

Using QGIS 2.0, I have created a color legend for raster values in the print composer. By default each color swatch appears to the left of its label in the legend but I want the color swatchs to ...
2
votes
0answers
104 views

Determining spatial cluster of park types in ArcGIS

Question 1: I am trying to determine which (if any) of my different park types are spatially clustered across my study area (city boundary). There are 162 total parks, 9 nominal categories (which ...
5
votes
1answer
171 views

Good projection for covering most of the world

I'm writing an application for building navigation routes thru the city streets, and not quite sure what projection would be best. I tried EPSG:3587, however, the tools I'm using - GeoTools and ...
2
votes
1answer
503 views

Adding Record to Related Table using JavaScript API

I looked and didn't find this question so hopefully it isn't a repeat. I am new to the JavaScript API and just started creating a web application where the user will enter maintenance records for a ...
2
votes
1answer
1k views

OpenLayers take user input of XY and create a point

I'm looking to take input from a form (X and Y WGS84 coordinate) and then draw a point on my map when the user clicks execute. I could not locate something like this in the OpenLayers examples.
2
votes
3answers
149 views

How to write FIDs of points within each polygon to polygon field?

I have two feature classes one with points one with polygons (in ArcGis 10.2). Now, I want to write into a String Field of the polygon layer a list of all the Point-FIDs that are within each polygon ...
1
vote
0answers
237 views

Interpolating shapefile of points to grid using Java?

I am looking for a method/prog/library(java) to interpolate points from a shapefile to a grid (file). I have seen arcgis can do that but i am looking for something free. More specific: i have ...

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