0
votes
1answer
8 views

Merge feature classes in feature datasets

I'm trying to merge a group of like feature classes which are contained within separate feature datasets. I can merge feature classes within a file geodatabase without having issues by creating a list ...
0
votes
0answers
7 views

How to perform an attribute-weighted sum of multiple polyline features from a single vector layer?

I have a shapefile of ~8000 polyline vector features representing traffic journeys on road routes. Each has an attribute representing volume of traffic for that journey. The routes are all generated ...
1
vote
0answers
4 views

Can 3rd party javascript libraries be used with CartoDB?

I'd like to build some functionality (search, sliders, etc.) in a 3rd party javascript library (jquery mobile), and integrate it with CartoDB. Can this be done? Are there any examples available or ...
0
votes
0answers
8 views

procedurally alter dimensions of embedded Picture_Element

Theoretically, should it be possible using arcpy to alter Picture Element dimensions whose images are embedded? My attempts haven't worked. I thought to clone these as a possible workaround but those ...
0
votes
1answer
17 views

Is there any way to fast read pixel value using gdal in C#

I create with C# a series of lat/lon value pair in the code(using i, j loop) and I want to extract the pixel value based on either lat/lon pair or pixel location (i, j). I know there is one gdal ...
1
vote
0answers
13 views

How to convert picture to annotation in ArcGIS 10.1?

I have been tasked to display analytical data tables (currently in MS Excel) in an ArcGIS (v 10.1) map document (.mxd) and would also like to convert them to map document annotation, if possible. ...
0
votes
1answer
14 views

exporting metadata from gps camera to spreadsheet

I have a question involving exporting metadata from a GPS camera to an application such as a spreadsheet. In essence, I'm working with a significant number of images taken with a GPS digital camera. ...
1
vote
0answers
12 views

Correct way to extract pixel data using GDAL. Current method gives repeated but changing value.

I am trying to open a spectral file and move bands of data from GDAL to OpenCV's Mat data structures. As of now I am just trying to make sure that I can correctly access each band using GDAL and pull ...
1
vote
2answers
22 views

What gps app to use for mapping bus routes?

I'm looking for a GPS app for android to capture waypoints and lines. I'm going to map the route buses and the stop points. Which GPS app is recommended for marking “points” and marking the “lines”? ...
0
votes
0answers
6 views

AGS Tiled Map Services and the .jpg file extension using js api

I have an old app that is still using esri js api 1.4 (i know, it's dated) but that app works and it can pull tiles from a 10.0 tiled map services. When it does that it calls for the tiles at the url ...
1
vote
2answers
29 views

ArcGIS Export to PDF with Thin White Lines

When I go to export to pdf from File -> Export Map, I see thin white lines that show up when I open up the map in Adobe. The lines appear only in the northern hemisphere in Russia, Canada and the ...
0
votes
0answers
13 views

geoprocessing service keeps running with default value for choice list, instead of actual value selected

I have published a script tool to a geoprocessing service. The tool is supposed to take user input from a choice list (which contains values from a field), and then that is loaded into select by ...
0
votes
0answers
8 views

How to select by attributes from CAD file using python

Trying to write a script that iterates through hundreds of CAD files and selecting certain layer from cad polyline class and then export it to a File Geodatabase. it seems that it is impossible to ...
0
votes
1answer
11 views

Projecting INEGI shapefiles from Mexico - not lining up

I have two INEGI shapefiles from Mexico (2000 and 2010) that I want to line up with one another. The 2010 file projects in the right location and I would like the 2000 file to match/line up with the ...
2
votes
0answers
45 views

addins vs python tools, which makes more sense?

With the upcoming release of ArcGIS Pro and the eventual retirement of Desktop and ArcObjects does it make more sense to start new customizations in python or continue to use ArcObjects/addins for the ...
1
vote
1answer
30 views

Exporting lists of Feature classes and fields from SDE

I'm using matt wilkies' arcplus module http://gis.stackexchange.com/a/5943/16793 to export a list of feature classes within an SDE database to a text file. I've also written a tool to write field ...
0
votes
0answers
7 views

GeoJson layers with leaflet in IE8

I have built a website displaying a lot of line shapes, using geojson, on a leaflet map. This is working relatively well in most browsers, though speed could be improved. As usual IE8 is being the ...
0
votes
1answer
18 views

Arcmap classification data exclusion

I am presenting some percentage change data, and I created a color ramp such that negative values are shades of red and the positive values are shades are blue. I want to use a custom classification ...
0
votes
1answer
7 views

QGIS Filters and Querries [duplicate]

In QGIS is there a way to filter a layer using the Query Builder to show all values which include a particular phrase. For example I have a list of organisations and I want to filter all those which ...
0
votes
0answers
21 views

Understanding X Y coordinates: geocode before or after projecting? What determines how many decimal places?

I am trying to figure out how different my groups' past Network Analyst analyses have been because they were using a geographic instead of projected coordinate system. But I'm getting hung up on the X ...
0
votes
0answers
11 views

Hex grid value interpolation in POSTGIS

I have a table of tessellated hexagons that I created as a hex binning grid to cover an area. I've then overlaid a point set to give some of the hexagons a value, see diagram:- The shapes with ...
0
votes
0answers
8 views

How do I export only additions when running export-diff to a shapefile in geogit (geogig)?

I currently have two commits in my GeoGit (GeoGig) repository. I'm running the following command on the two commits to get the differences exported to a shapefile. geogit shp export-diff [commit1] ...
0
votes
0answers
24 views

Lat Long to Useable values in QGIS

I am using both QGIS 1.8 and 2.0. So either is helpful. A client has given me locations of trial pits but i cannot load them into QGIS no matter how hard i try. For example, 50°24.711 North ...
0
votes
0answers
13 views

Get Result of ICalculator without actually populating a field (ArcObjects)

I have two feature classes: FeatureClassA and FeatureClassB. I am running a cursor on FeatureClassA and I have some logic statements (spatial and attribute logic) that compares the current feature in ...
0
votes
0answers
15 views

What C/C++ libraries exist to transform vectors between map projections

Has anybody written a C/C++ library (preferably one that is aware of Proj.4 definition strings) that has a set of routines to convert vector quantities (e.g., wind speed and direction) between map ...
0
votes
1answer
29 views

Batch create maps using arcpy.mapping

I'm trying to create .mxd and PDF outputs for a series of feature classes in an SDE. I'll need to match 2 feature classes (one original, one buffered) in the SDE based on similar file names. The ...
-1
votes
0answers
13 views

kriging interpolation of many z

I have similar questions with Iterating through z-values in ModelBuilder. I want to interpolate my z's with my specific interpolation extent raster and extract each value to specific grid points (I ...
0
votes
1answer
11 views

Central Feature Tool Key Error u'M'

I was trying to execute two tools (Mean Center Tool and Central Feature) when suddenly it gave me a error that I couldn't find the resolution too no matter what I tryed. The code is here (along with a ...
0
votes
0answers
4 views

ogr2ogr “Error: pointer being freed was not allocated” on mac mavericks

I've successfully installed GDAL via homebrew on mac But while I'm using command ogr2ogr, keep getting error below $ ogr2ogr -f geoJSON tl_2010_20_tract10.json tl_2010_20_tract10.shp ...
0
votes
1answer
16 views

Apply new style to selected features in QGis

Let's assume that I have selected some features in QGis. Now all the features in that vector layer already has some style applied to it. Now, I want to apply some new style to the selected features. ...
3
votes
1answer
29 views

Data Driven Pages - Page Number with Count

I hope this isn't a duplicate question, I have had a look but couldn't find an answer. I have a set of 100 data driven pages showing different roads. I would like to export the map book by road. ...
2
votes
1answer
100 views

Python script to export .csv tables from GDB

I am very new to Python programming and have been tasked with writing a program to export a csv file from a file geodatabase feature class. The csv should contain only certain fields and the records ...
2
votes
1answer
26 views

How to get the two nearest points between two polygons

I'm trying to draw the nearest line between the nearest polygons in a Polygon dataset (ESRI Shapefile). I know that for this purpose there is the Near Tool (ArcGIS), but it just return the point TO ...
1
vote
1answer
38 views

Python Geospatial development book error?

I am currently reading Python Geospatial Development by Erik Westra but I am stuck at the first hurdle where the book suggests that the easiest way to install gdal onto a windows machine is using ...
1
vote
1answer
16 views

How to select more than one feature using values?

What should I do if I want to select more than one feature using values ? For selecting a single feature, I enter an expression like this which works: "LINK" = 28 Assume LINK as a field in the ...
2
votes
0answers
23 views

Can I save an ArcGIS GeoPDF with all layers turned off, which can then be turned on individually in a pdf viewer?

I am working on an mxd that has many individual point layers (displaying species locations). To make life easy for my stakeholders, I'd like to export to a GeoPdf so that all of these point layers are ...
0
votes
1answer
11 views

Gdal_grid gives blank .tiff file after conversion

After using gdal_grid I get blank .tiff file. I use the following .vrt file : <OGRVRTDataSource> <OGRVRTLayer name="p"> <SrcDataSource>p.csv</SrcDataSource> ...
0
votes
1answer
23 views

how to use gdal_rasterize? how to know which attribute to burn with ogrinfo?

I have a vector layer I need to rasterize. I guess this is a basic operation, but I haven't found the information I need yet. First, I have reprojected the vector shapefile: ogr2ogr -s_srs ...
1
vote
1answer
41 views

one-to-many join using arcpy

I have a feature class that contains polygon features with a unique ID column. This shape-file is to be joined with a csv table that I've exported to a file geodatabase table. The unique identifier in ...
0
votes
0answers
49 views

How to build a relational database system with 4 tables in arcgis desktop? [on hold]

I have been given data from an working online application which consists of a relational model. My aim is to recreate the model using Arcgis Desktop. I have the table "elements" containing Point ...
0
votes
0answers
15 views

Converting the x-axis into a river line [on hold]

How does one create a simple bar graph which shows abundances on the y-axis and sites on the x-axis; but where the y-axis is on the right and the x-axis is a river line? (see image for examples)
1
vote
0answers
17 views

geotiff conversion to coordinate system with gdal

I would like to get the coordinates X Y Z from a geotiff file. I am using the gdal translate for the conversion. Which output format is the more adequate for containing a 3 numpay array X Y Z ?
0
votes
0answers
14 views

How to increase the resolution of a 3D image in QGIS GRASS NVIZ

I'm trying to display 3D data in NVIZ within QGIS, but the result appears very low resolution in comparison to the same data in ArcScene. Any ideas as to how to improve the quality would be greatly ...
0
votes
0answers
16 views

How to convert data type from float to integer in QGIS?

Currently I am working on importing data from MSSQL to Qgis 2.4. In imported database table attributes are shown in the format of integer ( in attribute table it showing like 48.23 and 16.20 in ...
1
vote
1answer
14 views

How to convert ASCII in x,y,z format using gdal_grid?

I have a map saved in (AFAIK) Arc/Info ASCII format and I would like to convert it with gdal grid but I am getting errors. My data (p.csv) is in the following format: 319053.25,319301.12,544.28 ...
1
vote
0answers
21 views

Is it possible to change the default raster style of newly created rasters in QGIS?

If I do calculations on rasters with the raster calculator or other tools, the resulting rasters displayed in my canvas are always in the same default style (singleband gray, black to white...) so ...
1
vote
1answer
12 views

How to export postgis points as blocks in dxf with ogr2ogr

I'm trying to export postgis points as blocks to DXF format. I have a simple table in postgis with columns: CREATE TABLE pod_com_azimuth ( ogc_fid integer, rotation double precision, pointtype ...
0
votes
0answers
25 views

ArcGIS ModelBuilder Clip Raster by Polygon Error

My task is to derive the hypsometric integral and hypsometric curve for a lot of drainage basins. Since it is very time consuming to do this manually, i have created a model (with help from this ...
0
votes
0answers
8 views

best route change the starting time automatically?

I want to find out the best route from point A to point Z. But this should always be at a different time. For example: How is the best route from point A to point Z at 07:00? How is the best route ...
0
votes
0answers
5 views

Pyqgis 2.2 : get signal on feature added : error message

For my pyqgis plugin 2.2, I try to: def logFeatureAdded(self,layerId,addfeatures): message = str(layerId) + " has features added: " for feature in addedFeatures: message += str( ...

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