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4
votes
2answers
139 views

How can I identify lines that intersect a certain raster layer area?

How do I identify certain roads ( of a line shapefile) that intersect with a layer that is produced from the reclassify tool (for raster data)? I am trying to identify which roads specifically are in ...
2
votes
0answers
60 views

Dataset in NJ, US

I need datasets in shapefile format including roadbed, building footprint and building roof height for Jersey City, NJ. I checked everywhere I could online. State, county and local GIS departments, as ...
1
vote
2answers
58 views

Looking for the Coords of US Map Boundaries

I am writing a program that needs a list of coordinates for the boundaries of the US. I can only find states individually but not the whole country. This is an example of the boundaries for Alabama. ...
2
votes
2answers
1k views

shapefile for mumbai area or section wise

I am working on a project in which i need to plot data on Mumbai city map section wise or area wise but i am not able to get Shapefile for the same. Can anyone please provide me the link where i can ...
1
vote
2answers
120 views

Copy Feature Class to Feature Dataset

On trying to copy a feature class to a feature dataset, I get this error message (see the screen shot). Any ideas how this is happening? error copying from FeatureClass to Feature Dataset
0
votes
2answers
174 views

How to obtain data to create average precipitation in 2012?

I am currently doing a final project, which I have to create a map of 2012 average precipitation of lower 48 states by using natural neighbour interpolation. The problem is that how can I get the ...
2
votes
3answers
617 views

Equivalent of CORINE land cover data sets for rest of world

I am looking for the equivalent of CORINE land cover data sets (100 meters) for the rest of the world; not merely urban areas but any area in general. I see sousa's question unanswered so I thought I ...
2
votes
1answer
158 views

Get SHP or SVG from GADM subdivisions within a country (Guyana)?

GADM is a high-resolution database of country administrative areas. I have downloaded the whole world distribution (it is composed of several dBase III files and a big .SHP file). I am trying to ...
0
votes
2answers
61 views

Are there publicly available run-off data for Africa?

I was wondering if there are good publicly available dataset for surface run-off (water)? I have a rough idea that surface run-off should be some function of rain-fall and soil ...
1
vote
1answer
118 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
1k 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
76 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 ...
1
vote
2answers
73 views

Where can I find hydroelectric generation data for the U.S.?

It is my understanding that the US Army Corps of Engineers has some hydro generation data on their various websites (divisions, districts). For example, there is real-time hydro-electric data ...
0
votes
1answer
40 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
292 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 ...
3
votes
1answer
487 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
53 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 ...
1
vote
1answer
487 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?
3
votes
2answers
257 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
79 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
27 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 ...
1
vote
0answers
153 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!
1
vote
0answers
25 views

Point Symbolizer() in rundemo.cpp file Giving error

The code is given Below: roads2_rule_11.append(point_symbolizer("abc.png")); The error is given below: rundemo.cpp: In function âint main(int, char**)â: rundemo.cpp:142:57: error: no matching ...
1
vote
0answers
40 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
65 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, ...
1
vote
1answer
67 views

Is it possible using JavaScript and cartodb.js to get the layer's total amount of visible data in a certain moment?

I am working with a torque layer and I would like to know for each moment the amount of data points shown in the visualization.
1
vote
1answer
53 views

Optimized interpolation method with fixed-location sample data points?

I'm trying to find an optimized spatial interpolation method that deals with fixed-location sample data points. Say if I have fixed-location sampling sites and collect data daily, and then use these ...
1
vote
2answers
373 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, ...
5
votes
4answers
1k 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
69 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 ...
8
votes
1answer
2k 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 ...
1
vote
1answer
32 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
215 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
0answers
307 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: ...
1
vote
1answer
44 views

What is a purpose of parameter 'separater' in mapnik csv plugin datasource?

What is the purpose of the parameter 'separater' in the Mapnik CSV plugin DataSource Example of the code: parameters p; p["type"]="csv"; p["inline"]=quotedStr; ...
5
votes
2answers
556 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 ...
1
vote
3answers
2k 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 ...
6
votes
5answers
8k 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
1answer
227 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?
4
votes
1answer
209 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 ...
2
votes
2answers
478 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 ...
3
votes
0answers
175 views

Lake Victoria bathymetric data

I am trying to find bathymetry for Lake Victoria (or portions thereof). Any GIS format and almost any resolution will do. As a last resort a hydrographic chart will suffice.
1
vote
0answers
16 views

New York Vision Zero Data

I'm trying to open Vision Zero Data provided by NYC, but they've not provided any documentation or guidance. Does anyone have any guidance? I'm ideally looking for such data in a CVS/excel type ...
2
votes
1answer
40 views

Sourcing Historical Wind data?

I'm looking for a service that provides hourly historical data for 24h and back. I am currently interfacing openweathermap.org but had to find out that not all stations provide this feature. Are ...
0
votes
0answers
32 views

2.4.0-Chugiak PostgreSQL layer subset causes DB error

I have succesfully connected to pgsql layer. I got an error after trying to define feature subset in query builder. Can anybody help with this error? An error occurred when executing the query. ...
3
votes
2answers
445 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?
3
votes
1answer
442 views

Where can I download Yahoo's Geoplanet Data?

I was trying to Download the Yahoo Geoplanet Data, so that my application does not have a dependency on the API provided by Yahoo. When I go to the download link, I see the following message: We ...
3
votes
0answers
116 views

Where do I find official summit elevations found on USGS topo maps?

I'm creating topo maps for my day hikes guides for national parks. I've already done one for Glacier National Park. When I was working on summits, I downloaded the data for Montana from GNIS and when ...
0
votes
1answer
438 views

Where to download shapefiles of interest for Honduras

Where can I download free Shapefile data for Honduras including: roads departments municipalities points of interest
1
vote
4answers
490 views

Looking for London postcode to area mapping data

I am looking for London postcode to area mapping data. I have reviewed several databases and API's and most resolve a postcode to at best a district and a ward, which doesn't correspond to the ...