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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24 views

Sourcing Lithology Map for small scale area [closed]

Where can I get the lithology data of the world which will enable me to reduce it a small study area?
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Power-line data India [closed]

How can I find shapefiles for power line distribution within India?
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51 views

Merging attributes of selected features tool not working in QGIS 3 [closed]

I want to combine some columns between 2 data attribute tables. The question, which I asked a while ago: Copying features from one attribute table to another using QGIS leads to quote long way. ...
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1answer
41 views
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1answer
21 views

Trying to find historical building footprints or centroids

I'm currently doing a research project analyzing how cities evolve over time and was wondering if there were any good online databases for finding historical building footprints. I've been looking ...
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Green space layer [migrated]

I'm looking for a data layer that can be used to display "green" spaces, which would ideally include parks (city, county, state, national), as well as golf courses and cemeteries. Is there a ...
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10 views

How to find CA census data for population from 1990?

I am fairly new to GIS and would like some help finding the correct data for my project. I am working on a flooding analysis from 1997 in northern California. I have acquired my Landsat images from ...
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22 views

Seeking shapefile of urban, suburban, and rural areas of US [closed]

I'm looking for something like this, doesn't have to be super accurate. I've tried searching for the source of that image but to no avail.
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17 views

Where to find open tabular hyperspectral data for machine learning research?

Where can i find open datasets regarding " Wheat/Maize Leaf Spectra with Associated water content, Potassium and Nitrogen Measurements" for machine learning research i.e. hyperspectral ...
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How do you get a .SAFE extension zipped folder of Sentinel-2 data?

I am running a code that requires the file to be .safe extension like this file S2A_MSIL1C_20161230T074322_N0204_R092_T37NCE_20161230T075722.SAFE but whichever source I download from all files are ...
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R SPEI package on waterbalance timeseries for multiple locations with NA's: unexpected data output distribution

I want to use the spei() function in the SPEI package on a waterbalance dataset from 2015-2020 of 99 locations. The waterbalance is calculated out of MODIS PET values (8-day summed to monthly) and ...
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21 views

Is there a quick way to calculate the change in an attribute over distance?

I am working in QGIS 3.14.0 and have a set of point data input via latitude and longitude in a CSV file; this file also includes data taken at these points. I would like to visualize the change in ...
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3answers
62 views

Accuracy of country shapefiles

I am working with a country shapefile for Pakistan, however it does not seem to be completely accurate. I wonder if this is an inherent limitation of shapefiles, or whether I could find an accurate ...
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Splitting lines at multiple points in ArcGIS

I have two shapefiles: First shapefile consists of lines features (approx 1500); it represents the public transport lines Second shapefile consists of point features (approx 3000); it represents the ...
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1answer
29 views

Is there an international standard for region codes that defines the European Union? [closed]

I have seen the ISO 3166 defines 2-letter, 3-letter and numerical codes for countries around the world. However, the European Union does not seem to have a code. Is there an international standard for ...
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Download Daymet tileID grid?

I'm trying to download tiled Daymet climate data ([see here])1. One can automate this process using a shell script, but you need to know the tileIDs that you want. Is there a way to download the tile ...
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1answer
23 views

Is there a standard vernacular for levels of political boundaries (specifically city, county, state, nation)

While building a geotemporal web app, I found that virtually all countries followed this simple four-level structure, akin to what we in the US of A call: city, county, state, nation. However, most ...
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1answer
27 views

How do I clip a raster to the shape of a polygon (non rectangle)

I would like to clip a raster to follow the shape of a river, which has lots of meaders and bends. I have created a buffer for the river of 300m and was hoping to use this to clip the raster. However, ...
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How to aggregate properly 8-days MODIS ET to a monthly ET?

I am looking for a robust method to aggregate the 8-day MOD16A2 (or MOD16A2GF) ET_500m values to monthly ET. Since ET_500m and PET_500m, are the summation of 8-day total water loss (0.1 kg/m2/8day). I ...
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1answer
38 views

How to index USGS ARD Satellite Data into an Open Data Cube?

I am trying to index a Landsat8-Satellite-Dataset from Massachusetts in the USA. I downloaded the dataset from USGS. Below my question you can find the datacube-metadata.yaml-File. It is surface ...
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1answer
33 views

Where can I purchase small scale high res raster imagery?

I am doing a personal project in my neighborhood that requires some georeferencing and as such I am looking for some sub-1m accuracy orthos with which to assist. The normal free sources such as USGS ...
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Ground Truth Data for India [closed]

I'm starting to get involved in a humanitarian project to understand crop-type and crop-yield in India to identify areas where they may be food shortages. The current approach for this project is to ...
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17 views

Looking for rivers data of South Italy

I am working on a twelfth-century description of South Italy (Calabria, Apulia and Campania) which describes rivers that are now dried up. I am attempting to create maps which reflect the description ...
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1answer
28 views

Get the begin and end coordinates of city municipality

I am not sure if this is the right place to ask this question. I would like to have an idea of precise coverage (extend) for the latitude/longitude of the city of Porto, Portugal. This is in ...
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How to calculate hot and cold spots using ArcGIS

I have to calculate the GiZScores to Dengue incidences in District wise.This should be done using ArcGIS software by using Getis Ord GIS tool. But the problem is that I have to use climatic factors (...
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1answer
42 views

QGIS points disappear after changing CSV file location, changing data source doesn't help

I moved my database and shape files, and wanted to relink them to my QGIS project. The shape file worked fine, but the CSV file wasn't reloading properly no matter what I tried. I could see the fields ...
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What is the best way to deal with inconsistent gSSURGO data across state boundaries? [closed]

I am calculating available water content (awc) using the values aws0_999 and tk0_999a from the gSSURGO Value1 table for South Dakota and Wyoming to use in a soil water balance model (SWB) to estimate ...
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1answer
43 views

How to get landmarks data contents that are added and deleted between 2 landmarks layers shapefile

Now I have 2 layers of landmark,2019 version layer(Blue) and 2020 version layer(Purple). I want to know landmarks that are added and deleted in year 2020 and I see the landmarks that are added and ...
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20 views

County list of Woodard's American Nations

I've been looking for county list of Woodard's map of American Nations, however, I only found maps of it and certainly as a beginner in the field, I am unable to transform this map into tabular list ...
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QGIS becoming unresponsive after I try and add (relatively small) layer

Each time I try and add a CSV as a delimited text file, I see this: The file is not large. Only ~2k rows and 462 kb. I've certainly uploaded larger files to QGIS and never had any issues. I've force ...
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1answer
35 views

My dataset lists state and county FIPS codes separately. How should I combine?

I can't do a simple "concatenate" because the codes don't have leading zeroes. Are there any available APIs that I can use to geocode this data given the format? Or do I have to manipulate them so ...
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23 views

Show data labels in Oracle Analytics Maps

Can anyone assist me in adding data labels in OAC (oracle analytics desktop ) Maps. The image below shows state names ,I have a similar requirement to add names to the city. I tried below json text ...
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42 views

How to convert XYZ to from-to format with azimuth and dip information? [closed]

I have an Excel spreadsheet with header, survey, and assay drill data. Header data contains hole ID, location coordinates, and length. Survey data contains related downhole survey with distance, ...
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1answer
29 views

Looking for data to create contour lines at close range

This is my first post here and I'm new to GIS and I'm not massively even sure what I'm asking, so please be gentle! I'm attempting to learn QGIS through self-study and my idea is to take on a few ...
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1answer
47 views

Seeking dataset to create reproducible ArcPy example for ArcGIS Pro

I would like to create a reproducible example for ArcPy (for ArcGIS Pro) and cannot locate any example feature classes or rasters that come with installation. I am looking for something like the ...
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1answer
79 views

QGIS and use of Python/R [closed]

I am very new to spatial econometrics. I have two quick questions about QGIS. Is QGIS Python powered? Do I need to learn Python for QGIS or knowledge of R will be sufficient to use QGIS? I don't know ...
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15 views

Having a shapefile count how many times it appears on a certain color of a .img

If I have a shapefile with points on it for Forest Fires and I want to see which type of tree the point is on, how would I go about that? I have the .img of each type of tree with a color ...
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1answer
30 views

Getting my data to be focused on one state

I have a map I'm working on for a final project and I'm a bit stuck as what to do moving forward. I have a map I'm making for forest fires and the type of tree in that area and I'm trying to get it ...
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0answers
54 views

Train/test split in QGIS

I have a polygon layer, which contains information about different classes and I am using it as training areas for supervised classification. Is there any way (like tool or plugin) in QGIS which could ...
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1answer
35 views

Sources for population density map of Europe

I want to make population density map for EU where I can show populations of people aged about 65yrs, where can I get a EU shapefile and population Excel file? Is there any EU shape file available ...
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1answer
41 views

Seeking a GNSS data to be use for my work [closed]

I would like to understand what GNSS is used for? Can I download it from the website and use it for my work? I am not familiar with it. Does it come with the GPS? Does it come with horizontal ...
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0answers
26 views

Identifying State Parks in the PAD-US dataset (Protected Areas Database)

I'm looking to map "State Parks," and I found this phenomenal, but complex database. Has anyone ever worked with the PAD datasets before? (or know any easier way to map State Parks?) In the PAD ...
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6 views

Satisfactory accuracy for a GEDI geo-locator

What level of accuracy should one expect from a GEDI geo-locator? I'm making a geo-locator for GEDI (similar to https://lpdaac.usgs.gov/news/release-gedi-finder-web-service/ ) and I'm wondering what ...
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1answer
71 views

Classification with different data dimensions

I am trying to use the continuous change detection classification algorithm (ee.Algorithms.TemporalSegmentation.Ccdc() and it appears to be working for me, however when I get the results the data type ...
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2answers
132 views

Convert raster to CSV with lat, lon, and value columns

I'm looking for a process to convert ASCII gridded data (in this case 60min/1 degree gridded ASCII population data (GPW) from SEDAC: https://sedac.ciesin.columbia.edu/data/set/gpw-v4-population-count-...
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2answers
32 views

Looking for land value data for anywhere in North America especially for Florida [closed]

I am researching on road alignment optimization. The research goal is to find least cost road alignment between two given points, considering highway codes. One of major costs which I need to consider,...
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1answer
30 views

The length of Benoa bay of Bali island [closed]

Since Indonesia's spatial data infrastructure is terrible, how can I know the length in a kilometre of Benoa bay of Bali island, Indonesia? I tried to google it and shockingly I didn't get any ...
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41 views

Seeking Berlin groundwater shapefiles

I would like to know if any of you has shapefiles of Berlin? I have been using https://fbinter.stadt-berlin.de/fb/index.jsp but it doesn't allow the layers in shapefile format and also https://...
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88 views

Identifying NYC neighborhoods using zip codes?

I have a dataset that contains zip codes. I want to figure out the name of the associated NYC neighborhood. For example, I have zip code 10021 and I want to know 10021 is located in Upper East Side. ...
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39 views

What is the highest spatial resolution for coronavirus cases?

I understand that the JHU CSSE Dashboard became the watering hole for public health professionals and data science enthusiasts alike, and it visualizes the spread of novel coronavirus (SARS-CoV-2) ...

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