Questions about obtaining data.
1
vote
5answers
3k views
How to convert a double field to a string?
I would like to convert a column in a spreadsheet from a double to a string so I can join the data with a shp file. What is the easiest way to do it?
1
vote
1answer
139 views
Need of an imagery for Mexico
I am doing Rapid Watershed Assessment for my agency and I am responsible for the Southern New Mexico and northwest Texas. I have 2 NAIP added to my ArcMap already and using it with the "Add Image ...
2
votes
1answer
132 views
How to refine queries using GeoNames
The people on this site have been wonderful in helping me query a list of the worlds parks with something like this query:
...
5
votes
2answers
167 views
How to get geographic information for American and world parks and cities?
I am working on building out park data for my web site. My site is about hiking, so I want to get a list of parks and cities in the world.
Is that possible? Where can I get/download/see such ...
6
votes
4answers
109 views
Identifying geographies that match certain climatic profiles through GIS
A certain post-haste project has arisen, and I would like to put this question to the collective mind of GIS.SE for ideas and references. The long and short of this research is trying to find roads ...
5
votes
3answers
453 views
How do I render data quicker in Arcmap?
Is there a way around to speed up the data into ArcMap ? When I converted the raster to polygon and some data would load up quicker and some other load slow. I am wondering if I could add the spatial ...
3
votes
2answers
733 views
Fastest way to create an ESRI Grid and populate cell values?
In terms of processing speed what's the fastest way of creating and then adding values to a raster?
The values will originally come from ASCII files which can be about 500MB in size - ideally I ...
13
votes
4answers
5k views
Where to get 2010 Census Block data?
This might be a stupid question but I would like to download 2010 Census Block Data for several towns and I can't seem to find it on American Factfinder. Is it there? And if not, does anyone know ...
11
votes
2answers
157 views
How could I rate roads for scenic drives?
relative GIS newbie here.
I've been working on a personal project to rate roads on how nice a ride they'd be on a motorcycle. I wrote a Python program to work through road data in the TIGER dataset ...
5
votes
2answers
348 views
Visualizing and organizing traffic flow data for an intersection
I'm looking for advice on how to organize data that describes traffic flows through several unconnected intersections over several years. I'd like to learn about the most basic representation of this ...
7
votes
4answers
2k views
Site to download al USGS Topo Maps in bulk
I am trying to create seamless topomap WMS or TMS layer that covers the entire US (not interested in geo-pdfs). To do that, I need either the rasters (geo-tiffs, etc) or preferably vectors (whatever ...
19
votes
6answers
481 views
Open access repository of general GIS spatial data?
As a newcomer to using GIS for research, I am wondering if there are online repositories for spatial data, similar to package repositories for Linux distributions.
For instance, I would be able to ...
3
votes
2answers
158 views
Data storage shared with co-worker [closed]
I would like to ask anyone out there who knows of a good free website that allows me to upload my gis data files to co-worker. Each project I am working on are quite large and would need to upload 1 ...
1
vote
1answer
709 views
Converting total station points to cartesian coordinates
I have a set of points which have been downloaded from a total station instrument. These data points are already in excel sheets and the issue now is how to convert these points (easting, northing and ...
4
votes
3answers
461 views
Australian Topo Map GeoTIFFs
Does anyone know if Australian topo map GeoTIFFs are made available anywhere (preferably for free)?
LINZ makes them available in New Zealand - http://www.linz.govt.nz/topography/topo-maps/index.aspx ...
8
votes
3answers
379 views
Data source for determining postal codes given location?
What is the best data source for determining international postal codes given a latitude & longitude?
2
votes
1answer
115 views
Where can I obtain 3D roadside features for UK?
I am doing some work on sight distances and I need a map or whatever of the UK that contains roadside features (road signs, trees etc) as well as the road features(road centreline etc) so i can ...
6
votes
5answers
2k views
Is there a way to view KML natively in ArcMap?
Answering this question: How do I import/export KML to ArcGIS Desktop? raised another one. There are loads of tools to import/export kml/kmz. Are there tools available for native viewing of KML in ...
0
votes
0answers
357 views
Extract Points from a Shapefile [duplicate]
Possible Duplicate:
Shapefiles to Text
I have several shapefiles from which I need to extract all of the points, with all of their attributes, including position coordinates. I only have ...
24
votes
6answers
729 views
How to cope with the newly discovered GPS bug? [closed]
Today the New York Times broke the news that after the Clinton Administration turned off Selective Availability in the GPS system, a bug had been introduced into the GPS satellite software itself, ...
13
votes
4answers
1k views
Data naming convention - starting with a number
My company uses ArcGIS and has a project and data file naming standards in place and (for the most part) followed. Something that has always bothered me about he naming standards is that it mandates ...
40
votes
13answers
1k views
The GIS of War - Tracking Conflicts and Their Effects
I was idly speculating on the many sorts of things people are keeping track of these days with GIS - natural/human catastrophes, demographic and economic patterns, climate change, etc. In that vein, I ...
16
votes
7answers
1k views
GIS data for fast food industry
I am working a small project related to fast food industry. I am trying find GIS data for fast food chains like subway, MC Donald's, Arby's, etc in state of Ohio. Basically, I am looking for point ...
3
votes
1answer
299 views
Complete lookup table for German admin codes in Geonames data? (admin4_code)
I am working with both the postal and Geonames data for Germany. I noticed that while the Postal data may be used as a lookup for ADMIN_CODES 1-3 (ADM1,ADM2,ADM3), it does not mention ADM4 at all.
...
1
vote
2answers
1k views
How can I insert new records to an ArcSDE feature class from a view in ArcSDE
I am wondering how I can both insert new records from a view to a feature class and update data that may be newer in the view than in the feature class. I have been fumbling around in modelbuilder and ...
30
votes
6answers
4k views
Downloading OpenStreetMap Data
Is there a straightforward way to download data from OpenStreetMap (OSM)?
Using North America as an example, I realize Cloudmade (http://downloads.cloudmade.com/north_america) and geofabrik ...
10
votes
2answers
465 views
Realtime traffic data provider(s)
What services provide realtime (or daily-updated) basic traffic informations for Western Europe ?
For example, traffic.com/Navteq provides such data to Bing Maps for US/Canada and Microsoft suggests ...
11
votes
2answers
2k views
Google Fusion Tables vs Amazon Web Services: which is better for GIS data?
What are the pros/cons for storing storing spatial data in Google Fusion Tables versus Amazon Web Services?
Factors would include: Cost, performance, ease of update.
8
votes
6answers
318 views
What GIS Data should Amazon add to its Public Data Sets?
Amazon says:
If you have a public domain or
non-proprietary data set that you
think is useful and interesting to the
AWS community, please submit a request
below and the AWS team will ...
3
votes
2answers
76 views
How can cities in a Metropolitan area share data collection costs?
Does anyone have any stories to tell (good or bad) about attempts to share the costs of data collection among cities/agencies in a metropolitan area?
Aerial imagery is a primary example, but would ...
3
votes
3answers
926 views
Advice on using CityGML data and GIS
I'm looking for advice on how best to use the CityGML data-structure and GIS (preferably ArcGIS/QGIS). I've read through their website and wiki and saw a list of software here that can be used to view ...
5
votes
2answers
2k views
postprocessing GPS coordinates with RINEX data to improve precision?
Im doing some mapping for OSM in my region and I am curious if the precision of tracks from a GPS Receiver can be improved if they are post processed with RINEX data.
The tracking is done with a ...
3
votes
2answers
1k views
usa electric transmission powerlines shape files sources
Does anyone have a good source for these?
I have some old (1993) data from the US National Renewable Energy Laboratory (NREL) and Cubewerx' WMS (Cubewerx are a spatial data provider); neither of which ...
3
votes
3answers
879 views
River drainage basin boundary
I'm looking for a set of outlines of the river basins in the UK - I don't need a particularly detailed or highly accurate map - just a map saying point X will drain into the Thames or point Y will ...
6
votes
4answers
246 views
Where can I get country, region, and city data?
I need the names of countries, country regions and cities of the world.
Where do I get that kind of information?
8
votes
10answers
1k views
Need a Benchmark GPS Trajectory data-set? Anyone?
I'm looking for a benchmark GPS data set, available for research purposes for free. I've found GeoLife GPS Trajectories dataset from Microsoft Research but I find it a little incomplete.
What I need ...
4
votes
3answers
289 views
Is there a DTM available for free somewhere?
To go a little bit further than the semantic question regarding DEM/DTM/DSM, I'd like to know if there is a free (of charges and use) DTM datasets? And what about resolution?
As far as I know,only ...
5
votes
2answers
341 views
Data ETL workflow optimization
I have a legacy workflow that I would like to optimize and automate (at least partially). The current workflow goes like this. I receive a MS Access .mdb file containing a single table. This table ...
4
votes
1answer
394 views
UK cities boundries in Ordnance survey
Are there any city boundaries of UK cities in the Ordnance Survey?
3
votes
5answers
1k views
Concatenate Fields in ArcMap 10
I added a field to an address layer in ArcMap 10 to concatenate separate address fields. I used the field calculator and a VB Script to accomplish this. So, for example, if the separate fields are ...
12
votes
9answers
5k views
Where can I obtain an up-to-date list of US ZIP Codes with Latitude and Longitude Geocodes?
NOTE: This began as a question on Stack Overflow, which has subsequently been closed. I also noticed a similar question about Most Up-To-Date Source for US Zip Code Boundaries, but I believe this ...
9
votes
4answers
349 views
Where can I find historic maps of city size?
I'm interested in examining basic dimensions of city size, primarily area (though population would also be of interest) from the earliest possible records. It does not matter where the city is in the ...
7
votes
4answers
2k views
Downloading SRTM data
Is there an easy way to mass download SRTM data? The data is published for download here, but it's sliced into thousands of small files, and I don't see an FTP option for more efficient ...
4
votes
2answers
299 views
convert GPCC precipitation data
maybe someone has already worked with the GPCC precipitation data from this site: ftp://ftp-anon.dwd.de/pub/data/gpcc/html/fulldata_download.html
and knows how i can convert this strange format to a ...
5
votes
2answers
243 views
Available US State or National business (or employer) database lists?
This question dovetails with this post on geomarketing applications.
I am familiar with some of larger, paid-for business registry's like InfoUSA and Dunn & Bradstreet. While the detailed ...
14
votes
3answers
915 views
What is the wire format for Google's new vector map tiles?
Google recently released new vector cartography for their mobile maps. I'm curious if anyone here has any insight into the wire format they use for transmission? I've experimented with a few formats ...
3
votes
3answers
261 views
Is there a projection issue with the NRC Canada Atlas hydrology data?
I have been using the Natural Resources Canada (NRC) data for various generalized maps but it is not until now when i overlaid higher resolution features obtained from the provincial government ...
15
votes
4answers
489 views
How to handle TIME in GIS?
Is there any way or any idea on how to handle Time attribute in GIS? For example, which are the ways to specify that an object is at a place at a given time interval and them it is in another place ...
7
votes
5answers
4k views
update one shapefile attribute table with values from another dbf table
I try to explain here what I am trying to do:
I have one shapefile and one independent dbf table with the same fields. In the dbf table all the fields are populated but in the shapefile attribute ...
8
votes
3answers
1k views
Where can I find free building height dataset for major cities around the world?
I am searching for building/property data which include building height, building area, lot size, and building type classifications(preferably as complete as possible). I am working on an Earthquake ...
