Questions about obtaining data.

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0answers
83 views

How to get National Geographic basemap in QGIS?

I'm proficient in ESRI's products and recently started using QGIS. I've used the national geographic world map (NatGeo_World_Map) in ArcMap, but am struggling to replicate this in QGIS. The map is ...
3
votes
3answers
270 views

What DEMs does QGIS support? + DEM data sample

I am working on QGIS rasters. I want to know about DEM file formats supported by QGIS. I know that QGIS can read the GDAL supported formats. but what is GDAL supported format ? Does QGIS support the ...
3
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1answer
89 views

Best place to download or purchase shapefiles for Louisiana Parish?

I am looking for shapefiles to either download or purchase for the BEAUREGARD Parish in Louisiana. I have been able to find files for the Townships and Sections but I am in desperate need of a ...
3
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2answers
410 views

Where can I get detailed Bathymetry data for Ontario

I need detailed Bathymetric data covering water bodies (including smaller ones) in the Province of Ontario. Our Provincial Government has it, but the use of the data are restricted due to liability ...
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2answers
137 views

Is it possible to change CRS without the .prj file?

I'm working with QGIS and trying to change the CRS of some maps. Is is possible to do it without the .prj file? Please let me know. Thanks.
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1answer
105 views

How to delete raster dataset from sde base programmatically

I use sde database, registered with ArcGis Server 10.1. Sde connection is direct. Database container is postgres. There is a raster dataset in this sde base. I can open this sde database ...
2
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5answers
183 views

Where can I get high-resolution (at least 1 foot) imagery of California?

Is there a national site or state site that will allow me to download High Res (1') aerial imagery of California? I have tried Cal-Atlas Download but they are at one meter. I have also tried USGS ...
3
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2answers
94 views

Is there a database/service that allows me to get the terrain type to a coordinate?

I hope i'm not totally wrong with this kind of question at this stackexchange page. Is there any sort of service avaiable that gives me (or allows me somehow to generate) the areatype to a coordinate? ...
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0answers
65 views

How to rotate u and v components of wind in rotated gribs?

I have a grib message of a rotated hirlam product. The gribmessage states, that the u and v component contained are relative to the rotated grid. How can I unrotate them?
0
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2answers
354 views

A shapefile / boundary coordinates for Bangladesh divisions

Are there any shapefiles on the boundary coordinates for each of the Bangladesh administration divisions? Essentially what I want to achieve is to have the minimum and maximum of the longitudes & ...
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4answers
1k views

Area Boundaries, London

Hope someone can help me with this. I'm having a little trouble finding a data set which has polygons of London districts as listed here: http://en.wikipedia.org/wiki/London_districts I've checked ...
1
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1answer
70 views

Conversion of coordinates of “Bochum coordinate system”

I need to convert historic coordinate data into more recent Gauß-Krueger data. Specifically, I need to convert "Bochum coordinates" used till 1960 in the local coal mines into DHDN/Gauß-Krüger zone 2 ...
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0answers
49 views

What reliable sources (paid or free) exist for fossil fuel infrastructure data?

I am trying to find GIS data for various types of petroleum and natural gas infrastructure (pipelines, refineries, gathering lines, pump stations, etc). I've found quite a few sources, mostly ...
2
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2answers
166 views

Japan Data: Postcode/Census

Hi I'm primarily looking for a GIS data source for postal codes in Japan as well as census data for different scales of geography. Has anyone found a good source of these data sets that is in ...
3
votes
1answer
123 views

Where can I get road data that includes max speed?

Does anyone know how to detect the road speed I. E. If one of our vehicles was driving on a certain road above the speed limit, we would want to know But no idea where to get this data from Any ...
0
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0answers
91 views

How to convert a set of points to a polygon based on a specific field in QGIS

I am having a point shapefile that consists of a number of point sets. I need to convert these points to a polygon based on a particular field in attribute table say for example locality . How can i ...
0
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1answer
258 views

Export table structure information to Excel QGIS or MapInfo

I want to create a data dictionary of the tables of our primary layers. So I want a way to export the table structure to Excel. I don't need the actual data, I just want to know what columns are in ...
2
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2answers
299 views

Ecuador Census Data

I am looking for Ecuador census data (digital GIS if possible) at the sub-parroquia (parish) level. The geographies and the tabular data would be great but at this point I am mostly in need of the ...
2
votes
1answer
69 views

Why does IDatasetContainer2.CreateDataset fail with ArcObjects at ArcGIS 10.1?

I have a small application used to check and generate network, created with the help of the following tutorial: http://help.arcgis.com/en/sdk/10.0/a...00000w7000000/ It worked just fine with ArcGIS ...
0
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1answer
181 views

Custom data entry in ArcGIS 10

Since VBA support is no longer supported in ArcGIS 10, what is being used out there for custom data entry forms. I'd like to develop something that is very intuitive (for non-GIS users).
1
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1answer
131 views

How to sum the values for bins with the same location?

I have two maps in csv form, each has a latitude, longitude, and value column. Since not all the positions in one map are in another map, is there any way in QGIS to display a new map which only shows ...
0
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1answer
98 views

Draw lines for existing list of data

I have a csv file containing information for loads of lines (dates, road names, condition information, etc etc) but which have no geographical information (other than the association of road name) Is ...
1
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1answer
106 views

Export some specific pages from data driven pages to pdf file by python

I need to export pages 14, 13, 23 and 24 of 26 pages of data driven pages to pdf file by python and then add the pdf file to the final pdf file by arcpy (python), any help please?
4
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1answer
152 views

How to convert a column of numeric IDs to letters?

I'm working with qgis 1.8.0. I divided a map into 500 features (small rectangles), and now I have the doubt if there is any way to change the ID of the attributes from numbers to letters? When I did ...
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2answers
112 views

free way to author, share ESRI gis data

I hope someone can help. THE ISSUE: I work for a company where 90% of the personnel work remotely. The GIS department acts as a support tool authoring content for a variety of projects. There is a ...
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1answer
40 views

How to handle a UnicodeEncodeError with sampling tool?

I'm using qgis and I keep getting an error when using the point sampling tool, its keeping me from getting the sampling done. Does anyone has an idea what is it about? Thanks!
3
votes
1answer
80 views

How to tell the size of grid cells created by the vector grid tool?

Im working with qgis 1.8.0 and Im making a vector grid on a map. Does someone know how big are the squares if the grid settings look like in the picture? Thanks for your time!
1
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1answer
197 views

Where can I find historical political affiliation data for the United States?

I am collaborating on a research paper where one of our variables is political affiliation across the United States. I will be creating a series of historical maps. I'm looking for the percentage of ...
0
votes
1answer
106 views

show dwg,as background not as vector

I have some dwg files that i need to show as background on my map, but the DWG is not need to be vector layers, i need only to show them with out the need of using. if i am trying to convert it to ...
0
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0answers
45 views

Which landmark to detect a CBD?

Anyone knows what shapefile (ArcGIS) available to detect a CBD (Central Business District), nationwide? Some use city hall as the landmark for a CBD. Is it applicable to use Courthouse? Where can I ...
2
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1answer
145 views

How does Google Maps know the location names?

How does Google Maps know the name of the very small shop in my street? How do they collect that kind of data?
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0answers
50 views

Vector grid out of range

I'm working with QGIS 1.8.0 trying to do some vector grid to a map. This shapefile (the original is a zip and has the following files .dbf, .prj, .sbn, .sbx, .shp, .shx) has some strange CRS and I ...
0
votes
1answer
48 views

Sampling from interpolated data layer

Im working with QGIS 1.8.0 and wanted to ask you how can I assign to each of the small squares of the map (I have the coordinates of the center each of them) values from an interpolated data layer as ...
3
votes
1answer
176 views

Divide shapefile

I'm new working with QGIS 1.8.0 and wanted to know if its possible to subdivide a map (shapefile, which is round-like) into small squares but following the outer round contour of the map? I tried with ...
1
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1answer
61 views

Source for all census tables available at each census geography/summary level

I'm familiar with using factfinder2 and generally know my way around census products. But one thing that I've never found is a document that has all the tables from major census products like the ...
0
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2answers
174 views

Cannot register a Feature dataset

I am having an issue trying to register a dataset, and being able to edit a featureclass within it. I am new to SDE so please bear with my explanation. I read online you cannot register a feature ...
1
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2answers
60 views

Can Facebook help show (statistics) how people move from place of living to place of work?

Maybe some of you guys know if you or FB can help, or who? Perhaps together with some University? I got this idea that FB probably holds quite a lot of location information on people (that are using ...
3
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1answer
386 views

Extract BoundingBox of Cities

For simple geocoding purposes I want to extract all cities from a single country of openstreetmap. They only queries I want to do are: ZipCode -> (List of) BoundingBox of City/Village ...
0
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1answer
86 views

Why is the CSVT file changing my real values to null?

I made a CSVT file to change desired real data to string data. After importing the original CSV file, that was linked by file name to the CSVT file, the string data appears as normal however all the ...
1
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3answers
47 views

Europe sub-national urban rates

Urban rate (the % of population living in urban areas) is a rather common demographic indicator, at nation-level resolution. I'm trying to locate sub-national urban rate data (NUTS level 2 to be ...
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0answers
18 views

Import attribute data? [duplicate]

I have a question that probably has a simple answer but I have not found it yet. Can anyone help? I have a shapefile of Germany's counties ("Landkreise"). Now I would like to add several attributes ...
3
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0answers
155 views

Where can I get free nautical route planner Data?

Please read - and understand - before closing; I do not yet have an answer. Thanks. I made a mistake. I phrased my original question so that it could be answered by recommending an application. It ...
3
votes
1answer
940 views

Good examples of interactive maps and associated technologies?

The display of maps and data within an interactive framework is becoming more prevalent online. I'm thinking beyond merely the ability to pan/zoom/control layers, but more along the lines of ...
14
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1answer
518 views

How to best model GPS tracks for storage, visualization and analysis?

I am thinking about writing software to deal with GPS Tracks and Waypoints (mostly storing, displaying and calculating metrics such as speed, grade, and some simple statistics). I wonder what should ...
1
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0answers
18 views

Algorithm to compile Lisiecki stack? (5MM-yr Temperature Record)

I have obtained the Lisiecki stack data from www.lorraine-lisiecki.com/stack.html How do I convert the d18O measurement into a figure for average surface temperature? What is the best algorithm? I ...
2
votes
1answer
355 views

European Mountains Shapefile Data Sources

I am trying to locate a GIS freely downloadable shapefile (preferably polygon) of European main mountain chains (not an elevation data), eg Alps, Carpathian Mountains. I tried variuos sources , ...
0
votes
1answer
72 views

Raster Data set Size on Disc (ArcGIS)

I have just converted a vector dataset of census tracts into a raster data set for an assignment. I can see the uncompressed size of the dataset in layer properties dialog box. But the assignment ...
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0answers
166 views

Census Demographic Data from DMA ID

How can I go about finding demographic data by DMA ID? Is there a data file I can download from somewhere that I can use to import into my web application?
18
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10answers
963 views

Common GIS data sources for developing nations. Where to start?

Not all countries have the benefit of funding/technologies for developing GIS data stores. I'm looking for a list of common GIS data sources that should be investigated when trying to build a good ...
0
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1answer
95 views

Is there a way to convert multiple columns at once from string to text, or to other data formats?

I have multiple data fields that need to be converted from string to text files. When I save them as "text" in excel or open office, they still load up as string files in QGIS. How can I convert more ...