7
votes
Accepted
USGS topo symbols for light-duty and unimproved roads
This can be done in QGIS using two custom line styles (see the bottom of this answer for the two style files you can import into QGIS):
While it might seem like the "Light Duty Road" (two ...
- 6,924
7
votes
QGIS slope output problems
The herringbone pattern in your image is a classic indication that a Nearest Neighbor resampling occurred somewhere in your workflow. I suggest that you go back through each processing step and ...
- 8,314
6
votes
Accepted
Loading DLG file into QGIS?
DLG (Digital Line Graph) format is not a valid OGR data source (it can be corroborated in OSGeo4W shell with ogrinfo --formats command). So, you need a data converter for DLG vector files. This ...
- 30.1k
6
votes
Accepted
Projection of aerial image using QGIS
The USGS preview page has a JPEG image that is about 9Mb which looks like this (ignore the red dots for now):
The metadata lists four corner points which I shall assume are the corner points of the ...
- 65.6k
5
votes
QGIS 3.2 using a USGS Topo for a basemap
Did you try loading it as a WMTS layer? In the Data Source Manager, use the WMS/WMTS tab to set it up. Or choose Layer->Add Layer->Add WMS/WMTS Layer. Use the following URL:
https://services....
- 1,304
4
votes
Accepted
Where to download QA bands (cfmask bands) for surface reflectance Landsat7
I just downloaded a Landsat 7 Surface Reflectance scene from USGS EarthExplorer. It contains QA bands.
If you are ordering from the USGS ESPA, CFMask should be included by default in the Surface ...
- 67.8k
4
votes
Can USGS High Resolution Orthoimagery be viewed online?
You can use Zoom Earth which allows you to control dates and times. You could also access Remote Pixels Satellite Search. Finally, You can get to the raw data on Amazon Web Services (Landsat Only)
- 1,871
4
votes
Matching two types of data (elevation and imagery) which are in different scale?
As long as each dataset you are adding (elevation and imagery) has the correct grid information, QGIS will be able to project both datasets properly. If they cover the same area, than you will have ...
- 12.1k
4
votes
Accepted
Why my sceneID doesn't work to download in landsat-utils?
You might need to get Machine-to-Machine access to use third party libraries which are based on this API. To get access you have to send request to USGS EROS User Services: [email protected]
Here is ...
- 7,476
4
votes
Accepted
What is the meaning of TL in LiDAR point clouds data sets?
The "TL" stands for Tribal Land. These areas are coincident with tribal lands and were pulled out of the original project in order to await approval from tribal authorities before publishing the "TL" ...
- 56
4
votes
Indexing USGS Landsat Collection 2 Level 2 datasets into Open Data Cube
You can now index USGS data into the Open Data Cube using the command line tool STAC API to DC
There are some notes on how to achieve indexing USGS Collection 2 data here.
A brief howto is as follows:
...
- 13.5k
4
votes
In Earth Engine, when exporting to drive the raster is shifted
If you additionally pass in the crs transform to the export call and remove the scale parameter everything should line up perfectly. You can access the transform like this: image.projection().getInfo()...
- 3,794
4
votes
Wanted: The Very Topographic Map WITH Building Footprints The National Map Viewer Displays as Default
It's a tile service that you're seeing.
If you just want to visualise it in QGIS, open the Layer - Data Source Manager (Ctrl+L) XYZ tab, select New and paste https://basemap.nationalmap.gov/arcgis/...
- 67.8k
3
votes
Combine multiple USGS topo quads into a single seamless raster?
Rather than using individual US Topo quadrangles (which are designed to be displayed in that format), you can download the underlying vector data from The National Map and customize the extent of your ...
- 1,304
3
votes
Where to download QA bands (cfmask bands) for surface reflectance Landsat7
If you download Collection-1 Landsat Images, both Landsat 7 and Landsat 8 Higher Level Data Products will come with pixel QA band. Otherwise you need to download the CFMask which has the same ...
- 674
3
votes
USGS Tree Canopy data download issue
The data can also be downloaded for the National Map (as part of the 2011 NLCD dataset), but it's in 3x3 degree segments so there are 131 parts to download. They can all be downloaded at once if you ...
- 336
3
votes
Accepted
Adding USGS WMTS to Mapbox gl js?
Here's what I used:
'https://basemap.nationalmap.gov/arcgis/rest/services/USGSImageryOnly/MapServer/WMTS/tile/1.0.0/USGSImageryOnly/default/GoogleMapsCompatible/{z}/{y}/{x}'
I found this answer ...
- 179
3
votes
Accepted
What happened to buildings on USGS topo maps?
FAQ States:
The original USGS 7.5-minute (1:24,000 scale) Historical Topographic
Maps (produced 1945-1992) included feature classes that are not yet
shown on US Topo maps (produced 2009-present)...
- 50k
3
votes
Range of numbers for Township and Range
To start with, Sections in a PLSS Township range from 1 through 36, not 32. The number of Townships varies according to the Principal Meridian they are referenced to.
- 638
3
votes
Range of numbers for Township and Range
To add what Rudy Stricklan states, the nominal township is a square, six miles on a side, containing 36 evenly-divided sections. However, townships and their subdivisions may deviate - both in number ...
- 8,314
2
votes
Accepted
National Map downloading wrong coordinates?
The website always sends DEM files that are 1° wide and 1° high.
If you want a smaller area, you have to clip the downloaded data to a bounding box rectangle you need. Every GIS software is able to ...
- 76.9k
2
votes
Accepted
Large Shapefiles in R
Use "x <- sf::st_read" it's much faster than rgdal and will happily read much larger data sets.
When you plot it, be sure to use "plot (st_geometry(x))" first, since it will otherwise do a lot of ...
- 8,226
2
votes
QGIS Loading GeoTiff at Origin
I downloaded the PDF from your link and used your gdal_translate command. My QGIS 2.16.2 opens the converted tiff file correctly with reasonable coordinates at the top left corner. It feels like it is ...
- 68k
2
votes
Seeking symbology (.lyr?) for USGS geologic maps?
As commented by the asker, the answer from USGS was:
I've looked carefully at these data and the files available, and it
seems we have no style file nor any explicit relationship between unit
...
- 65.3k
2
votes
Manually adding spatial reference information for FEWS rainfall data using QGIS
I downloaded some East Africa rainfall data and set that projection for it in QGIS. It was definitely in East Africa but seemed to reach further west than in the red box outlining the data area on the ...
- 65.6k
2
votes
Accepted
Remove Image layer from GeoSpatial PDF using ogr2ogr
That error is misleading. ogr2ogr / gdal_translate will print that warning if the output PDF already exists.
$ ls /tmp/test.pdf
ls: cannot access '/tmp/test.pdf': No such file or directory
$ ...
- 67.8k
2
votes
USGS/FGDC SVG geoscience point symbols for use in QGIS
Using a QGIS plugin called SLYR I was able to convert the current ESRI style file I use for FGDC symbols in Arc into an XML sheet. I have it located here: https://github.com/moendopi/QGIS-FGDC-Symbols-...
- 51
2
votes
QGIS 3.2 using a USGS Topo for a basemap
You can use QuickMapServices plugin. Just type USA in search field. It will create XYZ provider for you.
- 3,241
2
votes
Combine multiple USGS topo quads into a single seamless raster?
My best advice is to follow the instructions provided by the GDAL devs at https://trac.osgeo.org/gdal/wiki/USGS_PDF_Topo
It contains a python script to extract the neatline from the PDF metadata.
...
- 76.9k
2
votes
Accepted
USGS Landsat: Use of earth explorer
You are on the right track. You might want to select Landsat Archive instead of CDR and select any additional criteria such as percent cloud cover etc.
Landsat CDR refers to Climate Data Records. See ...
- 1,342
Only top scored, non community-wiki answers of a minimum length are eligible