5
votes
2answers
425 views

Pictometry Accuracy and/or Alternative

I'm looking for some insights into the accuracy (x,y,z) of oblique imagery from Pictometry in terms of providing accurate measurements for property evaluation. Is the high cost of this product ...
3
votes
2answers
437 views

Tabulate Area crashes Python and ArcGIS

I have a script that runs Tabulate Area on a single feature class multiple times with different rasters. In total Tabulate Area runs 5 times. 2 of the input rasters are provided as arguments to the ...
0
votes
1answer
105 views

request two layers in search action of one PanelForm

here's my case: i have a panelForm with 4 fields, and a search button, that search for the features that correspond to the 4 fields given by the user. and i have two layers that both contains the 4 ...
0
votes
4answers
644 views

Dynamic labeling looks awful in flex map

I published a service to ArcGIS Server 10.1 from an .mxd with no halos around the labels and created a flex application using the flex viewer. When I browse to the map here and zoom in on an ...
0
votes
2answers
430 views

problem with search (formPanel)

am new to GeoEXT and am trying to do the search with form panel. and i want to search features from 2 postgis table, published in geoserver, this features correspond to the field on the formpanel and ...
6
votes
1answer
267 views

Using one-to-many relationship classe/tabl in ArcGIS Desktop for monitoring?

I have a water source feature class in my geodatabase that stores point locations and other non-changing information. I want to monitor these water sources year after year and keep track of the data ...
2
votes
1answer
538 views

If I've given two different layers the same CRS, why won't they overlay one another?

I have a "towns" and "state" shapefile for Massachusetts as two separate vector layers in QGIS. I've set the project coordinate system to WGS 84 at the bottom of the screen (next to the "coordinate" ...
0
votes
4answers
562 views

How to find parcels related to geocoded addresses?

I have geocoded a table of addresses (around 200 records) in ArcMap 10.1 and now need to select the parcel polygons that they are related to. Trouble is the geocoded addresses fall outside of the ...
2
votes
1answer
480 views

Arcpy Network Analyst solver error

Hello GIS Stack Exchange, I am finding it difficult to load locations to sublayers using python in ArcGIS 10.0 network analyst Vehicle routing problem. I'm also having some trouble debugging my ...
1
vote
1answer
2k views

Having trouble selecting polygon from existing layer (using OpenLayers.Control.SelectFeature)

I am hoping someone can point me in the right direction. I am not a programmer, so that is my first roadblock. ha The problem: I have an existing polygon layer and I am trying to select one of the ...
0
votes
0answers
32 views

using python and arcpy , how can I compute the direction and angle of a line segment? [duplicate]

if start_point_x < end_point_x and start_point_y > end_point_y: slope = ((end_point_y - start_point_y)/(end_point_x - start_point_x)) radian = math.atan(slope) degrees = math.degrees(...
3
votes
1answer
3k views

Raster Version of Spatial Join (one to many) [duplicate]

I have two raster layers that are identical in shape (they overlap exactly) and I need to perform the raster equivalent of a Spatial Join (one to many). My files need to stay in raster format ...
7
votes
4answers
2k views

Splitting polylines according to coincident (or touching) points with other polylines?

The question is unfortunately not answered yet. I'm looking for a method or python script to split polylines according to coincident points with other polylines, but avoid splitting the ones which ...
2
votes
0answers
295 views

Different results from Spatial Analyst GP Tool and Python

I am writing a script that has to subtract one raster from another. The rasters I have represent 1) Parking Lots (1 = Parking Lot, 0 = not Parking Lot) and 2) a buffer around the Parking Lot (1 = ...
1
vote
2answers
1k views

Using Google Map API for Business with Openlayers

Has anyone used the paid version of Google Map API (for business) with OpenLayers? I am currently using the free version and wonder what the difference is, from both the end user and developer ...
4
votes
2answers
3k views

At the northpole, which way is east? [duplicate]

If a person stands on the north, or south pole. How do they determine which way is east/west?
2
votes
2answers
159 views

Could use a bit of XAML guidance when designing with ESRI Silverlight Viewer

I'm trying to implement a version of this in my web map: As you can see, part of the XAML is: <esri:Map x:Name="MyMap" WrapAround="True" ExtentChanged="MyMap_ExtentChanged" ExtentChanging="...
2
votes
2answers
108 views

Solar analysis; Are there any issues with splitting large DEM

I am trying to run Solar analysis in ArcGIS and it is an enormous DEM of a very mountainous region. I'm obviously going to have to split the DEM, but I was wondering if there are any issues with ...
1
vote
0answers
623 views

Calculating the Centroid of polygon in modelbuilder (VBA to Python) [closed]

Got an easy one, that's got me stuck. I'm moving some models that were created in 9.3.1 to work in 10. Part of the model is calculating the X coordinate of a polygon to a specified field. The code ...
2
votes
1answer
130 views

How to convert QGIS Field Calculation to ArcGIS?

I have a field calculator expression I use in QGIS to generate unique IDs that are sequential, but start with a text string. I now need to perform the same thing in ArcGIS, but I am unsure of how to ...
3
votes
1answer
1k views

Creating maps programmatically using ArcObjects. Adding legends, scale bars, north arrows?

I'm looking for some examples related to the publishing of maps programmatically to image format using ArcObjects. More specifically I would like to add standard map elements such as a scale bar, ...
4
votes
2answers
4k views

Loading shapefile to a specific table in postgis using ogr2ogr

I have already created a geometry table in postgis. I want to load several shapefiles into that table using ogr2ogr. But I didn't find the parameter which could specify that table. ogr2ogr -append -...
1
vote
3answers
10k views

Speeding Up ArcGIS, redrawing sooooo slow!

I just updated ArcGIS to 10.1 and it is so slow. When I load my template mxds they can take 30 plus seconds. And if I have to change the view it's another 30 seconds. Does anyone have any ideas ...
1
vote
0answers
609 views

QGis Grid statistics for polygons error - Module caused access violation!

I'm trying to calculate statistics for a raster layer using an overlaying polygon layer, I'm using SAGA "Grid Statistics for polygons" function, but it returns an error, sadly.. So in the sextante log ...
0
votes
0answers
415 views

Spatialite, to speed performance, when should I create Views, Indexes or additional spatial tables?

I’ve got a large Spatialite database with a table of lines (roads, rail and water). I created a spatial index of the geometry to speed things up. This works amazingly well when I’m zoomed in close....
1
vote
1answer
2k views

'GIS' grade mobile mapping app that isnt ArcPad? [duplicate]

I am a GIS analyst/geologist with a mining company based in Canada. However most of my fieldwork is in remote places with minimal access to the internet. I am after a reliable alternative to ArcPad ...
0
votes
1answer
126 views

Force Geoserver SRID 0

I'm developing a gis solution which uses only geometry data. I designed my spatial DB with PostGIS and now I'm performing some trials connecting the DB with GeoServer map server (using the ...
0
votes
1answer
431 views

arcpy.setValue for Condition from Dictionary

Hi: I am trying to create a function to update multiple fields based on different criteria. I want to pass the field name and condition thru' a dictionary (please see the function description in the ...
4
votes
1answer
432 views

Raster to vector with gaps in Landsat ETM

I need to find size of water area from a raster (jpg) using QGIS 1.8.0-Lisboa. The raster is a Landsat image with gaps of data in it. I used Polygonize, but the output file shows wrong polygon size ...
0
votes
1answer
1k views

Marker layer not responding to events in OpenLayers

I have multiple layers in OpenLayers: three vector layers, one google map layer, and a marker layer. I registered feature selected event to all three vector layers (which works fine, but btw is that a ...
2
votes
1answer
70 views

Fixed Scale / Fixed Zoom in eCognition

I'm wondering if there is any option in eCognition Developer / Architect were I can control Zoom or Scale Factors. It's necessary for my work that I use the same scale for all processing steps.
1
vote
2answers
199 views

Model not editable on a different PC

I am using ArcGIS 10.1 model builder on windows 8 to create create models for my processes. But when I open the model using Arc GIS 10.1 open model for editing with Arc GIS 10.1 running on Windows 7 ...
1
vote
2answers
780 views

Add a time dimension in ESRI mosaic raster dataset

I am in the process of creating a script to pull daily .asc files from a ftp server, convert them to a raster format, and push them into a mosaic raster dataset. Ultimately, the raster dataset will be ...
4
votes
2answers
282 views

Is there an address gazetteer for QGIS?

I have a SQL database that has our local address database on it - it has no geometry within it, just a list of addresses and X and Y co-ordinates. I want to use this data to enable people to search ...
3
votes
1answer
302 views

How to store data for gis system?

I'm developing a GIS solution using Postgis database and geoserver as web map server. The solution to develop will analyzes the defects (as a polygon) and process parameters values (as a linestring) ...
2
votes
0answers
546 views

Clipped raster leaks outside polygons

I am trying to clip a raster (DEM) with a polygon layer in ArcGIS10.1, using Data Management>>Raster>>Clip. Basically the clipped raster has many pixels outside the polygon boundary, mainly for thin ...
25
votes
2answers
2k views

Why do we use the terms “longitude” and “latitude” for a spherical body?

To specify a geographic coordinate we use the terms “longitude” and “latitude”. Far as I know, these terms derive from the Latin latitudo (= breadth) and longitudo (= length). In German we use the ...
1
vote
1answer
858 views

Why do objects disappear when I zoom on a dynamic map service? [closed]

I have a dynamic web map service that contains some point objects. When I zoom in and out, some of the point object disappear and reappear randomly. The map service is dynamic, no cache has been ...
1
vote
1answer
199 views

Big ImageMosaic is not showing in Geoserver?

I create imagemosaic with many big pictures, but in geoexplorer or geowebcache this layer is not display. If i create imagemosaic with 3(for example) pictures(from big imagemosaic) then layer display, ...
1
vote
0answers
313 views

Convex Hull issue in QGIS 1.8

When creating convex hulls based on input field in qgis 1.8, there seems to be always one less convex hull created for the unique values in the input field. For example; I have a point vector file, ...
3
votes
2answers
469 views

informations about “gdaltransform” utility of GDAL

I have a doubt about GDAL reprojection. I use "gdalwarp" utility to reproject an image in a specific projection system (for example WGS84 UTM49). "gdalinfo" on original image displays this corner ...
2
votes
1answer
136 views

How to render iD editor-style streetmaps?

Is there a simple way to render OSM data (let's start with just streets and names for a single metro area) client side as nodes and edges like the new iD editor? I'm comfortable with d3 but am ...
0
votes
2answers
143 views

territory analysis

I want to determine the territories in which customers to a bank has the shortest path. It can be done with desktop software packages or programming if it is needed. Does anybody has idea on how to ...
1
vote
1answer
303 views

Python GDAL: find out spikes and pits in DEM

I'm working with on a DEM (Geotiff) in Python GDAL, and I'd like to find out the spikes or pits in my terrain. I have no idea how to proceed, does anyone have good algorithm to help me out? Thanks, eo
2
votes
0answers
714 views

How to start developing with Jeppesen C-MAP?

I've just downloaded all the contents from the FTP of Jeppesen for their product called C-MAP CM93. I've been reading the documentation contained in the SDK folders, but I can't figure out how to ...
2
votes
3answers
530 views

From OSM to shape. Parsing problem

I'm working at OpenStreetMap project for android at the moment. I want to retrieve OSM data from my app(nodes, markers and paths) and convert it to shape file (.shp, .dbf and .shx). Later, I'll load ...
1
vote
1answer
46 views

Datums in compound CRSs

Is there some specific constraint regarding vertical and geodetic datums within a compound Coordinate Reference System (CRS)? E.g. if the ellipsoid model should be the same or not, or if the vertical ...
1
vote
0answers
130 views

Embed map in a website

I am using arcgis server 10.0. I published a mxd file using arcgis manager resources. I see the web url http://cosmic-dellt410:8399/arcgis/services/DD/MapServer but it says get method not allowed. I ...
0
votes
1answer
385 views

How to specify field name in raster to feature conversion tool or intersect tool?

What I want to do : input: raster file, polygon feature layer process: Convert raster to polygon using IConversionOp.RasterDataToPolygonFeatureData Method Intersect resultant polygon feature class ...
-1
votes
0answers
2k views

How to develop a PHP GIS Applicationfor land parcel search? [duplicate]

I know this question has been asked numerous times but not from this angle. I am proficient in PHP and PHP Frameworks, my interest is now on GIS with the sole intent of creating a map solution where ...

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