Questions about obtaining data.

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4
votes
8answers
3k views

What is the best way to change a data type in the ArcGIS attribute table?

What is the easiest way to change the data type in an attribute table in ArcGIS for multiple fields? Say if the fields have been exported as a string from Excel and I would like to use them as ...
1
vote
1answer
39 views

Public GIS data for lots within sections of township and range for NM, USA

Anyone know where to find a publicly available shapefile/fc of lot divisions within sections for township and range of New Mexico? I've been to several government websites that offer this type of ...
2
votes
1answer
76 views

Detailed topographical map of Istanbul

I need to acquire a very detailed topographic map of Istanbul, Turkey without any markers. Do you know such sources who provides these kind of maps? I tried to Google it, but the results were far ...
2
votes
1answer
38 views

Obtaining free satellite imagery for Australian floods?

How can I obtain free satellite imagery for Australia? I want to find the extend of flood in specific time. I have already tried land-sat.But unfortunately there is no data available for that specific ...
13
votes
6answers
878 views

What is the best way to visualize multiple large LIDAR tiles?

I want to load approximately 10 large LIDAR tiles for analysis. I have tried using ArcScene but it appears there is a limit on how much data ArcScene can handle at one time. Each tile is 65-90MB in ...
0
votes
1answer
20 views

Append value(string) to multiple selected fields

In my attributes table I want to insert a new value to a few selected items, and keep the old data inside the field. The table contains multiple columns (street name, length... and public ...
2
votes
2answers
52 views

Is there a county-level maps dataset that includes independent cities in virginia?

and thank you in advance for your help. The following code shows the dataset I am working with: library(maps) CountyMapData <- map_data("county") head(CountyMapData) long lat group ...
1
vote
1answer
37 views

Where can I find shape file for postal codes/zip codes for india?

I have been searching for free/paid (preferably free) sources for postal code shape files for india. Does anyone know where I can find one?
2
votes
1answer
61 views

Where can I find a shapefile of hexagons that covers the world?

I'd like a persistent .shp that covers the world in hexagons (preferably of a decently small area)–does anybody know where I could find something like this, or perhaps what software I could use to ...
0
votes
0answers
26 views

OpenStreetMap how to identify major ports

I'm quite new to OSM data. Can anyone help me with the best tags to use to identify major shipping ports? I'd like to be able to identify cities that have a significant amount of commercial shipping ...
3
votes
2answers
56 views

LIDAR online training

Beside ESRI's LIDAR online training, I'd like to work on some hands-on training that I can learn about LIDAR. Are there any good LIDAR out there that I can get some training with the datasets ? ...
2
votes
1answer
34 views

Where can I find road attribute and network for New York City?

Is there any possible to find the attribute of each road (such as road capacity, speed, longitude and latitude.) in New York City ? Thanks
0
votes
1answer
20 views

Historic (and current) borders of Miami, FL

I am working from Australia and am new to US mapping and Census data. I am looking for historic boundaries of Miami (FL) from maybe 100-200 years ago. Also current boundaries would be great - what ...
14
votes
2answers
1k views

What is the best practice for data management? [duplicate]

I have always been curious how other folks are storing their spatial data. Outside of an enterprise environment where much data is stored in enterprise geodatabases, is it better to store data per ...
1
vote
0answers
31 views

Where can I find free shapefiles of oil/natural gas pipelines in Mexico?

I'm looking for free shapefiles of oil or natural gas pipelines pertaining specifically to Mexico or even trans national pipelines between the U.S and Mexico. Thanks!
4
votes
4answers
5k views

Looking for an annotated vectorial map of the world

I'm looking for an annotated vectorial (PS/SVG/...) map of the world (+countries). Wikipedia contains many vectorial maps (e.g: http://commons.wikimedia.org/wiki/Category:Blank_SVG_maps_of_the_world ...
1
vote
0answers
21 views

XY coordinate data cleansing - search split and append not co mingling

My first question posted is for a project that stemmed from my current work where the data entered had some minor coordinate issues but to the extent of the data not being able to import more than 50% ...
0
votes
1answer
42 views

Where can I find data on Vegetarian Restaurants in the US?

I'm doing a GIS project on Vegetarianism and I'd like to include all of the vegetarian restaurants in the United States. I haven't been able to find anything like it, or even data on all restaurants, ...
37
votes
21answers
44k views

Are there any free administrative boundaries available as shapefiles?

After learning about the US Census's TIGERLines datasets I'm addicted to GIS :) I've working with the following layers, from the USA data Country boundaries State boundaries County boundaries City ...
1
vote
1answer
140 views

Where can I find shape file (free/open source) for all country . at admin 2/3 should cover major districts/towns

I need to download shapefiles for all country from which i need to genereate topojson for around all countries. currently I am using data from naturalearthdata.org which only provides Admin 0 ,1 for ...
1
vote
2answers
48 views

Worldwide High-Resolution Water Body Shapefiles with Consistent Scale

Where from your website can I access worldwide vector water body shapefiles that have better resolution than the generic SRTM 90m data? Do you have coastlines and inland features (lakes, estuaries, ...
16
votes
7answers
1k views

Are any fictional worlds available in some GIS format?

Is there any fictional world (e.g. Middle-earth, Discworld etc.) which could be used in a GIS context? For example, an MBTiles archive and a shapefile or any other format usable with OpenLayers / ...
4
votes
4answers
620 views

Now that NationalAtlas.Gov is retired/removed, where is the largest source of public shapefiles for the USA?

I used nationalatlas.gov for many years, downloading various shapefiles regarding water, roads, boundaries, environmental factors, and more. NationalAtlas.gov was a central public site that many GIS ...
2
votes
2answers
53 views

Find Healthcare Data by Geography and Income Level

Is anybody aware of a data source for healthcare related data (number of people covered, type, etc.) for any geography (looking for USA) that can also be broken down by income level? I've tried ...
6
votes
2answers
177 views

How do I convert a tweet into a point in QGIS?

I've been doing some research on using R to datamine twitter, but I haven't really found an answer or a decent tutorial for my question. I'm interested in pulling tweets from twitter with a certain ...
2
votes
3answers
291 views

Data providers equivalent to USDA/NRCS/FSA Common Land Unit (CLU)?

For one of my agricultural projects, I really need reasonably accurate field boundaries for fields in the US, specifically Iowa right now but later, other similar states. The USDA/NRSC/FSA Common ...
2
votes
1answer
56 views

Polygon files corresponding to Russian Census

My team is using the 2010 Russian Census and we'd like to have polygons that correspond to these population values. We're flexible to any sort of polygon format (shapefiles, GeoJSON, KML, etc). ...
1
vote
1answer
23 views

How to join the shape to an external data

I'm developing an application that uses Shapes only to draw the map. I would like to "Inject" the data at the time of viewing, since my data is dynamically changing. Anyone know of any way of doing ...
2
votes
1answer
2k views

Exporting .jpg files from data driven pages in Arcmap

I have generated about 90 maps through data driven pages(ArcGIS 10.0). I now want to export them as .jpg files in either landscape or portrait format. I tried python but it is not working, it worked ...
4
votes
1answer
129 views

Sourcing GIS data from First World War (WW1)?

Simple question, but does anyone know where I can get some detailed (eg 1:10m scale) vector data from the First World War? I've been through the archives here, but it seems the best sites for it ...
0
votes
0answers
54 views

Looking for a data source for all villages, towns and cities in the world

So, I've been working with Geonames data dumps, but I am finding that they are either not complete enough (cities > 1,000 population), or too complete. Here's an example of being too complete: ...
5
votes
2answers
106 views

Is there hydrologically correct water-course data for Africa

I was wondering if there are any hydrologically correct river-channel data available for download for Africa? By hydrologically correct, I mean the topology should be correct. Connected river ...
11
votes
8answers
5k views

Obtaining Australian Spatial Data?

I already have basemap data - for that Bing Maps or OpenStreetMap are fine. However, for demonstration purposes I need data for operational layers that I can throw on top of this. It needs to be ...
0
votes
0answers
43 views

Finding political party affiliation data for the US

My ideal find would be party registration or affiliation down to the household, Congressional district, block, block group or Zip code level for the whole country. I've been sniffing around for a ...
2
votes
2answers
1k views

Indian city points and village boundaries

I am looking for Indian city/village points and village/Taluk boundaries for India. A perfect example what I am looking for is here for the State of Haryan, produce by Haryana Space Applications ...
2
votes
4answers
679 views

Shapefile for India which includes Telangana (state)?

I need a shapefile for India which is up-to-date to display the regional borders. By up-to-date, I mean that it includes Telangana as a state. Many shapefiles that I downloaded do not have Telangana ...
3
votes
1answer
41 views

extracting geographic location from NOAA NARR grib

I've downloaded a NOAA NARR grib file that I want to extract the wind component as well as the geographic location. I'm able to extract the wind component from the grib but I can't seem to find any ...
1
vote
3answers
66 views

How to sum all values with the same ID in ArcGIS Desktop? [duplicate]

I did a one to many spatial join and ended up with an attribute table as follows: Lets say we have 5 different IDs that have numerical values in 500 rows. I need to sum the values for each ID, and end ...
4
votes
3answers
500 views

Free radar (SAR) satellite data

I'm looking for free (non-commercial use) sources of radar (SAR) satellite imagery. Does anyone know of sources?
5
votes
3answers
8k views

How to import info from mdb file into a project?

I need to import info on a QGIS project. The info are in a MDB file (population, mean age, number of cars and so on: one record per region) that is written to be connected with a region shape from an ...
4
votes
1answer
111 views

Highest resolution Digital Elevation Model for the UK?

I need the most precise and highest resolution free digital elevation model for the UK. Would OS terrain 50 or ASTER GDEM be more suitable for view shed analysis?
2
votes
3answers
166 views

How to get shapefiles or kml files for city map in India?

I am doing a project. In that I'm using QGIS for visualization purpose. Using the OpenLayers plug-in i am getting map of a city. What i want to know is whether I can convert that into shapefiles ...
8
votes
1answer
132 views

Is cost of new LiDAR data reasonable for deliverables provided (in Canada)?

My organization is considering hiring a company to capture new LiDAR data to help with current storm water issues that we are currently experiencing. I am a GIS analyst that has been assigned with ...
1
vote
1answer
363 views

Why use a database when you can have all of your data in javascript/openlayers?

I have a really simple and basic question. First of all, I have to mention that I am pretty new to web applications and GIS. I am working on a web application using Openlayers, Postgresql/postGIS and ...
2
votes
4answers
196 views

Shapefiles of Central America and Mexico coastlines?

Does anybody know/has a shapefile of Central America + Mexico (WSG84) (with no administrative boundaries) at a low resolution that could share with me? I'm looking for a very simple shapefile without ...
0
votes
0answers
13 views

Looking for Offshore Wind data for Puerto Rico and the USVI

NREL seems the obvious provider for such data but the NREL data download page only provides onshore wind data for this area. NREL even has an offshore wind energy map image for Puerto Rico and ...
2
votes
4answers
571 views

Where can I find a list of states, districts and tehsil names in India?

I need only names for making a chained dropdown list for users to select location correctly and submit the data. Please provide any resources. I emailed censusindia.gov.in but no reply from them.
1
vote
5answers
180 views

Searching free data source: Shapes of counties worldwide

I want to create a map with openlayers, that contains a vector layer, with all "counties" of all countries of the world. "County" doesn't mean any strict political term here. I just want to split the ...
3
votes
0answers
37 views

Lake Victoria bathymetric data

I am trying to find bathymetry for Lake Victoria (or portions). Any GIS format and almost any resolution will do. As a last resort a hydrographic chart will suffice.
3
votes
2answers
58 views

What are the types of bus routes data, which are made available from Open Street Map (OSM)?

With regards to bus routes, what are the types of data which are made available for download. Is it possible to export a region's bus routes in open street map (OSM) or GIS data format?