Questions tagged [data]

Any collection of related facts arranged in a particular format; often, the basic elements of information that are produced, stored, or processed by a computer.

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15 views

Seeking shapefile (.shp) of Chittagong City Corporation [migrated]

I need shapefile of the Chittagong city corporation of Bangladesh for my research work. I have searched over the internet but in vain.
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Seeking comprehensive source for Building Shapefiles in New South Wales, Australia

Is there a website with a comprehensive source for Building Shapefiles in New South Wales, Australia? I have downloaded the Shapefile from here https://download.geofabrik.de/australia-oceania.html ...
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15 views

Getting grayscale heightmap from Terrarium map

I'm downloading Terrarium maps from AWS S3 and I'm unable to generate a gray heightmap out of it. Does someone know the formula to translate the pixel RGB values into the grayscale (0, 255) heightmap? ...
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39 views

Spatially join linestrings (which can overlap or not overlap) in R and provide output in a data format that I can add other variables

I am using R to exam road infrastructure. The sf dataset I am using is very granular e.g. for the same road two or three observations may exist that are differentiated by different coloured tarmac ...
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21 views

Public MGRS 10km polygons dataset?

I am looking for a worldwide vector dataset of the 10km MGRS grid. What I am after is the grid polygons, with the corresponding grid codes present in the attribute table. On the website of NGA I ...
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1answer
37 views

Seeking 1890 County Shapefiles of Scotland

I am struggling to find the county border shapefiles for Scotland that came into effect in 1890. I keep finding "counties before 1890" when googling. So, the file I'm looking for does not include a ...
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54 views

Optimizing/reducing geolocation data for speeding up visualization

I have an application that receives geolocation data from clients (cars) every minute and shows this on a web page (like owntracks). The data is stored simply in an SQL database - 1 point is 1 row, ...
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26 views

GDAL C# - ReWrite of PY function in C# to CHIP dataset

I am working on a small project that utilises GDAL and its C# bindings. TASK To chip a dataset given the top left and bottom right LAT/LNG coordinates. PROBLEM My resulting CHIP is offset by 40km ...
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1answer
22 views

Seeking shapefiles of oceanic global climate zones (tropical/subtropical/temperate)

I need to make a map highlighting the marine tropical zone but could not find any shapefile containing that information. Some sites have lots of information on marine zoning (Marine Regions) but ...
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1answer
20 views

Excluding some columns in the attribute table for the public use

I am trying to post a feature service for an Open Data Hub site but want to exclude some columns in the attribute table for the public use. Is there a way to use a feature service but alternate the ...
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Where to get State, District and Sub district level administrative map of India from? [duplicate]

Most of the maps are outdated and don't incorporate the changes made after the formation of Telangana. I'm new to this field so I can't find a reliable source. I need the map to have the boundaries ...
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1answer
27 views

Environmental Analytical Lab Data to Geodatabase

What is the best way to get groundwater analytical data into a GIS geodatabase? The data is currently in Excel format, but there are options from the lab for other file extensions dbf. What is ...
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1answer
36 views

Google Earth Engine - add label to feature collection table/CSV

I'm exploring different ocean environmental data in Google Earth Engine. I have created an image per variable by using the .reduce(ee.Reducer.mean()) function. var sstHS_mean = sstHS_collection....
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1answer
32 views

Seeking boundary coordinates of all counties in US

I'm trying to find a database that contains all the latitudes and longitude coordinates for the boundaries of the counties in the US. I found a json file that only had segments of Texas counties, but ...
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2answers
30 views

OpenLayers data format [closed]

I am just running an application using OpenLayers. All data is transfered from my database in GEOJSON format. My current task is to review the implementation of the data format. Important ...
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35 views

Seeking GEDI data for specific region or country

Since GEDI data are published now, I am planning to download data that are over Bangladesh (the entire released data set is of 7GB). However, I suppose, the locations of the shots are references (i.e. ...
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1answer
36 views

Seeking shapefile with count of restaurants in various cities [closed]

Where can I get shapefile with count of restaurants in various cities? I want to get the data and do clusters with accessibility of each restaurant
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0answers
24 views

Finding distances associated with change in latitude and longitude at given location [duplicate]

I am writing a program that uses GPS lat and long coordinates and a time change to determine speed with the output in units of m/s (precise to 0.1 m if feasible, but 1 m is sufficient). When ...
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22 views

Find Shapefiles for world map, country borders and ISO3 [duplicate]

I am trying to look for a source of clean Shapefiles in .shp format with country borders, for every country around the globe. Would you be able to point me to an online free source?
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1answer
37 views

Seeking world sea routes for ships [closed]

Where I can find world sea routes for ships? I need it as a GeoJSON or shapefile format.
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1answer
38 views

How to download global SOC and clay soil datasets?

I just wanted to clarify the best way to access the latest release of SoilGrids (5 Dec 2019). Are the datasets for clay (CLYPPT)at: https://files.isric.org/soilgrids/data/recent/ the same as https://...
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2answers
49 views

Populated Places Names [closed]

I downloaded both Natural Earth's populated places .shp files but neither has the populated name place that I need, it is quite a large regional town which I would have expected to see but is not ...
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18 views

Shapefile for Colombian Cities with District / Borough level outlines [duplicate]

I am looking for a shapefile for the city of Medellin and Bogota - Where it has the districts/Boroughs outlined I have been on a both Colombian National gov and Local Gov sites, as well as official ...
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Accessing past USDA NRCS data

I am constructing a panel that includes past crop yields, but I found that SDA/WSS/GDG only grant access to the current version(2019) of cross-sectional tabular data. Is it possible to access ...
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2answers
52 views

Sea level change layer

Is there a vector layer showing sea level change by different cities around the world (so not just US or just EU ones)? I remember looking at ArcGIS Webmap some time ago, but can't find it now anymore....
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42 views

Get district boundaries for Tokyo

I am looking for district boundaries (what OSM puts at level 9) for Tokyo major Wards (level 7 in OSM). I have found on OSM and affiliated websites some of the district boundaries, but hardly all. ...
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2answers
43 views

Seeking NRCS soil survey data at state or county scale?

Ideally, I would like to download all the NRCS's soil survey data for Pennsylvania, as is shown on Web Soil Survey. However, if it's not possible, I would like to at least get the data for Bradford ...
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1answer
29 views

Cadastral data data.gouv.fr

Someone has already worked with cadastral data on the data.gouv.fr website I need to have information about the attributes of the "Buildings" layer. Is there any information among the data provided ...
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1answer
36 views

How do I convert an elevation shapefile into a CSV file with its XYZ data?

I am new to using QGIS and LeapfrogGeothermal Modeling. I have a shapefile for Elevation and Altitude data and need to extract XYZ coordinates out of it? Can I do that? and how? and what kind of file ...
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2answers
132 views

Calculating green metropolitan urban areas

I need to calculate green spaces in the metropolitan area for 155 cities around the world in QGIS. Greenery would include everything from parks, trees, playgrounds, golf, vineyards, etc. Any advice ...
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28 views

Seeking shapefile of Roman building footprints?

I am trying to find a Shapefile that consists of building footprints of Ancient Rome (the city). Does anyone know of a good resource for download? It seems like there should be a digitized version of ...
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1answer
56 views

Seeking database of all German cities with latitude and longitude [closed]

Does anyone know a service that provides this or has advice how to obtain it myself? Ideally free.
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1answer
37 views

Seeking US coastal shapefile

I need to calculate distance to the coast based on a latitude and longitude point. My concept is to use a line of the East Coast to calculate the distance. Does anyone know where I can find a ...
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15 views

Finding satellite imaging showing developments in landcover in specific geographic areas?

I'm a student looking to compare the development in landcover every 5(ish) years across San Diego county & am not finding much luck with it so far.
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1answer
75 views

Seeking Nigeria administrative boundaries

I am looking for Nigeria administrative boundaries (0-3) level especially the 3 rd level which is called "senatorial districts". Where can I find these?
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1answer
35 views

Making one to many to many Attribute Relationships

I am making relationship between three tables in QGIS 3.8 version ("ACTIVE SITE","FUEL_TANK","REFUEL"). The primary key and the foreign key for the Tables are as follow the primary keys are "ACTIVE ...
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3answers
62 views

Seeking data for São Tomé and Príncipe?

I am a total GIS beginner and have been trying to make some simple maps of the nation of São Tomé and Príncipe using QGIS and publicly available data. The readily available data I find comes from OSM. ...
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26 views

Seeking high resolution real-color (RGB imagery) dataset?

Specifically interested in the the South Florida region, USA. The aim is to pull up high quality aerials to detect manholes and wellheads from space! These things can typically be half a foot to a ...
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1answer
42 views

Copyright of using geospatial data from the internet [closed]

I am curious about what kind of copyright does geospatial data that can be downloaded from the internet have. For example, if I want to use data like OSM data, satellite imagery data etc to make ...
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1answer
20 views

Netherlands census data by municipality (gemeente)

I am looking for Dutch Census data (period 2012-2019), aggregated at the gemeente level (municipality), covering basic population statistics (number of people, gender, age, ethnicity, etc). The ...
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0answers
26 views

Download traffic signs as geodata (e.g. GeoJSON) from OpenStreetCam

Do you know any way to download traffic sign data (stop signs, give ways etc.) in a geographical format (KML, GeoJSON, Shapefile...) from OpenStreetCam?
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Recognized, calibrated test points for a rangefinding function?

I'm trying to find out if there are scientifically accepted calibration points to measure the effectiveness of a geodetic distance finding function. So far I've been using the listed latitude / ...
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1answer
38 views

Seeking list of geodetic benchmark locations for all of Canada? [duplicate]

Does anyone know where I can find a list of geodetic benchmark locations for all of Canada? I am looking for a few specific control monuments in Arctic Canada with accurate coordinates
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Need mountain ranges of North America polygon shape file for QGIS [duplicate]

Can anyone recommend a polygon shape file of the North American mountain ranges, and the website I can download it from? Something like the attached image, except I don't know where the attached image ...
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1answer
56 views

Seeking Shapefile of World countries with national currency attribute?

I looking for Shapefile of a World countries having an attribute of the national currency, do you know how can I get that ?
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1answer
38 views

Seeking polygons that map out land zone type (ie Residential, Industrial, Commercial) in UK?

I'm looking at displaying the commercial and industrial areas of the UK on QGIS so that I can do some work on them. I'm not looking to add my own data to it, merely find a shapefile or geopackage or ...
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1answer
90 views

Seeking TopoJSON map of Chinese provinces which includes Hong Kong, Macau and Taiwan?

I have a TopoJSON map of China which is working well in d3.js. However, it is essential that I add Hong Kong, Macau/Macao and Taiwan to the map, but they are not included in the TopoJSON file. I have ...
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2answers
35 views

Seeking SA Suburbs GIS shapefile?

Can you provide a link to the South Africa Suburbs shapefile or specifically to the Umgungundlovu District Suburbs shapefile? I have browsed the demarcation board but it is not available on http://...
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2answers
129 views

Seeking free public LIDAR data of road in LAS format?

I am currently working on LiDAR point cloud road marking extraction. Please help me to get relevant public dataset in LAS format? Sample data is as shown in the image below: Data without original ...
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2answers
105 views

Source for regularly updated ENCs?

Is there a reliable source for Electronic Navigation Charts, where they get updated regularly? I am able to find for American waters on the NOAA website, but not for other regions.

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