#FREE MRSID DOWNLOAD USGS MAP HOW TO#

All the documentation I can find online says that satellite data usually comes in single color band raster layers that you can stack to get the composite image, but this shapefile I downloaded has a really confusing structure and I can’t figure out how to read it as a normal image (I’m using the raster and sf packages in R). Download will be available by GeoTIFF tile, MrSID Generation 3 tile and MrSID Generation 4 tile. (I was looking at an area including the US Northeast and tried both the L8 OLI/TIRS and L7 ETM+ layers from the Collection 1 Level 1 Landsat data.) I chose the shapefile as it seemed to be the best option–I’m just trying to get a basemap image. Freeware viewers are available here: http.

I followed these instructions (they’re very clear and helpful–thank you!) but when I reach the end and “click here to download results”, there is no geoTIFF option, just csv, shapefile, kmz, and some other random formats. Many state agencies offer free downloads of digital topographic maps for their state.

Free mrsid download usgs map