0
votes
1answer
14 views

Opening an modis hdf file in Envi and Calibration

I have downloaded an modis hdf file.it is l1 and its name is MOD021KM ..I want to convert it to radiance.so I performed this steps in envi Open>EOS>MODIS selected modis hdf file.then I tried to run ...
1
vote
1answer
114 views

QGIS Print Composer with ESPG:32615

I have imported a PostGIS layer as the only object into my project and set the project and layer CRS to EPSG:32615 (UTM Zone 15N). My layer appears just fine in the work area. When I try to create a ...
0
votes
1answer
22 views

Get a list of layer names using PyQGIS

I need a list containing the names of all the layers in a QGIS session. I did the task as layersNames = [] for i in self.iface.mapCanvas().layers(): layersNames.append(str(i.name())) but this ...
2
votes
1answer
142 views

Natural Earth: How to get the position of all provinces that belong to a state

This question is about Natural earth 1:10 states and provinces.shp file. I'm using ogr2ogr and want to know the name of the id i need to pass . In purpose of pulling out the right states regions. ...
1
vote
0answers
25 views

ArcGIS Solar Radiation tool says output global radiation raster empty?

I am using ArcGIS 10 with windows7 64 bit on core i7 processor I am working with ArcMap 10 solar radiation tool to create the area solar radiation map. Every time I run the tool it stops after some ...
2
votes
1answer
4k views

How to geocode addresses from MySQL and add them like markers to the Google map?

I'm using Google Maps API and Google Geocoding for geocoding addresses. I have table named 'users' and column named 'location' in MySQL database. Column 'location' contains addresses. I need to ...
4
votes
1answer
324 views

How to create a service area using both streets and buslines in the same network?

I want to create a network analysis more difficult. Therefore, I want to calculate a Service Area around hospitals next to busstops. But: The network does not only consist of roads and ...
2
votes
1answer
26 views

Saving Leaflet Maps in Database

I have a webpage with a Leaflet Map, I can add markers,filter markers and so on. My question is that how can I save it? Load the Map Add some Markers on the Map (Optional) Filter the Markers on ...
5
votes
1answer
127 views

fTools “Join Attributes by Location” missing in SEXTANTE/Processing Toolbox

I am working with the new Processing Framework in QGIS 2.0.1. I really like the graphical modeler, because it allows my to make my own tools without having to be able to write pyhton or any other ...
1
vote
1answer
21 views

Can I visualize MultiLineStrings in Google Maps

I have made a web application which retrieves roads coordinates from a Postgres database and I when I attempt to visualize this using Google Maps API nothing shows. I am trying to plot ...
0
votes
1answer
9 views

Can a WMS layer be added as a feature layer to CartoDB?

There are plenty of pointers that show how to add WMS as a base layer in CartoDB. However, I want to add a WMS layer to the [Layer Switcher] so that it is available as a queryabl feature layer. I was ...
2
votes
2answers
132 views

Wrong projection high quality shapefile for the coastline of Helsinki region (Finland)

I did some spatial interpolations in R and I need a support for those. Looking for shapefiles online the best I could find was and it looks really horrible, the same area in ggplot looks like . I ...
0
votes
1answer
286 views

missing tables vertices_tmp and vertices_tmp_id_seq pgrouting workshop

I'm using OSgeo 6.5 dvd and studing pgrouting workshop for get shortest path. I created database call "routing" and used "template_routing" for create tables but only 3 tables created. So then I ...
0
votes
2answers
105 views

projection conversion from mercator to google maps format

Is this spTransform(Finland3, CRS("+proj=longlat +ellps=WGS84 +no_defs+ellps=WGS84 +towgs84=0,0,0 ")) the right way to project a shapefile with this projection coord. ref. : +proj=merc +lon_0=0 ...
0
votes
1answer
176 views

Life cycle of an AxControls - license missing in some point of the execution

Does anyone know the lifecycle of an AxControl (AxTOCControl)? I have a complex application, that uses several technologies (Spring.NET, NHibernate, DevExpress components) among them Esri's ...
3
votes
1answer
182 views

Using Geodatabase Annotation in ArcView 3.2?

I've been asked to take a parcel layer (shapefile) that contains house numbers and create an annotation layer so the house numbers are displayed in a separate annotation layer rather than a label to ...
1
vote
1answer
1k views

Converting Seismic Shot Points into polyline for linear distance for each Tract using ArcGIS for Desktop?

I have Seismic shot points (receivers and source points) that I am trying to convert from Points into a polyline for linear distance for each Tract in ArcView 10.1. What is the best way to do that? ...
1
vote
1answer
26 views

QGIS: How to get Symbols saved in GPX Files

I have some waypoint layers that contain different types of points and I distinguish these in QGIS by different symbols and colours. I want to export these to a GPX file that I can download to my GPS ...
2
votes
0answers
22 views

Assigning Color Ramp using PyQGIS

According to the PyQGIS Cookbook, a color ramp can be assigned in the following way: rlayer.setColorShadingAlgorithm(QgsRasterLayer.ColorRampShader) lst = [ QgsColorRampShader.ColorRampItem(0, ...
0
votes
0answers
14 views

Importing raster and vector: GRASS GIS 6.4.4

Almost giving up on this task, and need some support. I´ve been studying GRASS GIS and training with some tutorials with The NC-dataset. What I want is doing the same task as the one called "Surface ...
0
votes
1answer
245 views

Join and Calculate vb.net

Im trying to join an excel table to a shapefile and then calculating those fields using vb.net. The code I have written has no errors, but won't work when I try it in ArcGIS 10.1 and I'm out of ideas. ...
1
vote
1answer
636 views

Converting avl to sld or qml

Is there a simple way to convert a avl file into a sld or qml? Deegree does not work an my laptop (java problems) Or is there a way to open the original avl file in qgis? Thanks
1
vote
2answers
130 views

HP Plotter 1050c plus

I have an (1998 manual) old plotter HP PLotter 1050c Plus (only works on Windows XP)... It prints fine, but the Source/Receivers are not showing up on the map nor the legend. Everything else is ...
1
vote
2answers
59 views

Why is ArcMap giving greyed out scale area?

Not sure why my scale area has turned grey and is not allowing me to zoom in or out?
2
votes
0answers
40 views

Issue with dissolving a polygons layer in QGIS 2.4

I downloaded a dataset of roads and parks from OSM. I then buffered the roads and merged with the parks. Now - all i want is to dissolve / union all the features in the merged layer. I fail to do it ...
7
votes
5answers
9k views

Comparison of Open Source Desktop GIS Packages

I'm curious as to what comparisons are out there between different Open Source Desktop GIS software packages. I'm aware that there has been a QGIS and gvSIG comparison on this site but I am looking ...
3
votes
0answers
42 views

Difference between Custom Layer & plugin data source?

You can add custom data to ArcGIS Desktop in two different ways: Plug-in Data Sources Custom Layer What is the difference between these two? I'm looking at the possibility of creating an editable ...
1
vote
1answer
29 views

Linestring to CartoDB api

I want to add a linestring to a CartoDB API web app for one time use, I have SQL statement being ran at the same time and just want the linestring in the SQL statement to be displayed.
0
votes
2answers
211 views

javascript function to search all OpenLayers vector features covering a pixel

I have an OpenLayers map that draws features in a vector layer. The features are selectable and have a popup on select. Unfortunately in a lot of cases the features overlap so it can be impossible to ...
8
votes
2answers
151 views

Good Things To Highlight About GIS on a Company Website?

I'm in the process for creating the GIS content for our new company website. So far, I am having some serious issues. GIS is a complicated subject. First off, most people coming to our website won't ...
1
vote
2answers
743 views

Polygon to raster conversion failure - workaround for very small polygons?

As one of many processes within a workflow/script, I need to convert polygons to rasters. I am using the feature_to_raster tool in ArcGIS 10.1. This is done within a python script, but for the ...
2
votes
0answers
28 views

Mapnik change xml config on the fly

I have tile server running based on mapnik, mod_tile, and renderd. It was succesfully generate and serving tile using mapnik xml configuration which defined on renderd.conf. Something like this : ...
2
votes
2answers
105 views

How to check if layers in a dataframe with Arcpy

I working on mxd (I work with ArcMap 10.2.2 & python 2.7.5.) that have 100 layers. I'm trying with python script to add layers to dataframe and check if the layers are within the dataframe. if it ...
8
votes
1answer
89 views

Cutting out the world into polygons of equal population size

I would like to cut out the world into polygons of equal population size, say 100 million persons (starting for example with raster data of population density as provided by the NASA). I know that ...
15
votes
5answers
5k views

Using ArcGIS in mixed version environment?

What are some best practices for ArcGIS 9.3 and 10.0 in the same shop? We have a couple of dozen users on 9.3. The bulk of our data is in file geodatabases and geotiffs, with a respectable splash of ...
43
votes
36answers
4k views

What is the most annoying fact about the GIS market/industry?

What are the most annoying facts about our industry/market? What makes you angry? Is there anything that you can't stand it?
1
vote
1answer
133 views

QGIS Clipping and reprojecting SRTM data creates a HUGE file

I'm having difficulty in QGIS doing what should be a very simple thing and I haven't been able to find anyone who has had the same issue. What I'm trying to accomplish: I need to export a very ...
30
votes
32answers
2k views

What software do you use as complementary to your GIS desktop/server?

What software do you use as complementary to your GIS desktop/server in your work as GIS programmers/analysts and what programs are an absolute must you can't do without?
4
votes
4answers
2k views

What is a good plotter that works well with ArcMap?

I will soon be setting up a small office and we will be needing a 36" plotter. I am looking for recommendations for a good plotter that works well with ArcGIS. Speed is not important as long as I can ...
28
votes
12answers
948 views

Can you point me to an example of a modern-day John Snow?

It's became pretty much a custom to start spatial epidemiology or medical geography textbook / lecture with an example of John Snow's cholera investigation in 1854 Soho. He's definitely still ...
2
votes
2answers
25 views

Best sites to create a collaborative map?

I need to suggest a tool to build a map together, ie. let multiple users add POIs and routes on a map. I know about OSM-based Umap but are there other online tools I should know about?
1
vote
1answer
313 views

Cross sections of two surfaces in Civil 3D

In Civil 3D I have calculated the volume between two surfaces. I would like to have corresponding cross sections of the first and second surface for all the study area. "Create superimposed profile" ...
2
votes
1answer
14 views

How to derive the slope angle value from DEM?

I am trying to calculate the steepness of each pixels (30m) from the DEM of 2m resolution. I have made use of ERDAS Imagine - Slope function and returns a contour-like pixel image. The pixel value ...
0
votes
0answers
12 views

WPS: how to write output to a raster layer in GeoServer

In GeoServer vector-based Web Processing Service (e.g. gs:Import), we can have the output saved to a GeoServer Layer, as described in the documentation. Outputs Name Description Type ...
2
votes
2answers
87 views

Adding layer into ArcMap via Python - .pyt versus .py

In the final step of a script I've built, I'm trying to add a layer into an empty blank map document. This is my block of python code below that adds the layer. Everything works fine if its run from ...
2
votes
4answers
7k views

Cutting features to do opposite of clipping in ArcGIS Desktop?

What´s the easiest/smartest way of getting the opposite output of the clipping tool? I just need the area of feature A1 which is not covered by feature A2 in a new Layer/File. Now, I get the result ...
2
votes
1answer
405 views

combine two OCG filters in Openlayers : ERROR: invalid input syntax for integer

i need to combine two OCG filters. each one works fine separably but if i combine them using Filter.Logical.OR, the first one works only. var c_filter = new OpenLayers.Filter.Logical({ type: ...
5
votes
1answer
428 views

How to Create Touching Multi-Part Polygons?

I have a set of parcels as illustrated in the image below. There are currently no multi-part features in dataset. What I would like to do is to merge (not the right word) all of the parcels with same ...
1
vote
1answer
645 views

Import TomTom OV2 into Google Maps as My Place Stars

Is there anyway to import my TomTom POVs (saved in an OV2 file) into my google maps account as favorites? i.e. My Places > Starred. I appreciate this may involve converting the OV2 into something ...
2
votes
1answer
26 views

Problem with first page of data driven pages

I'm working on creating a set of data driven pages of quarter sections in a township. QutrSecs is the layer, QTR is the Name field (e.g. NE, NW, etc.) and sort field is SECTIONS (e.g. 01 -36), so that ...

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