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USGS-R / hypeRusgs

Creating some R hype by showing off advanced techniques applied to USGS science.
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Working with spatial data and mapping in R #15

Closed ldesm closed 5 years ago

lindsayplatt commented 5 years ago

Thanks for the idea! Any specific applications? Creating maps for publication, or doing more GIS-like analyses? Do you have specific shapefiles or spatial data you would like to map?

ldesm commented 5 years ago

All of the above!

Spatial data input/output in R, basic data manipulation (subsetting, appending data, editing data points and attributes), map visualization for report figures & presentations, well as more complex GIS type analysis (overlay--for example)--I think all these things would of general interest. I don't know how much people know about R's spatial capabilities, it was new to me and might be to others as well, even though they may have used R for a while. Also, being able to review model input data and model output while doing analysis, rather than having to open up ArcMap and bring the data back into that environment to see it, would save a lot of time.

But specifically, there are a couple of things I've been trying to do, unsuccessfully:

--write a shape file (or any format file) from R that can be read into and used in ArcGIS. I can ESRI shapefiles and geodatabase files into R, work with them and plot them, but have not been able to produce files that will get back into Arc. So, spatial data formats and inter-compatability with ESRI Arc software would be a topic I would be interested in, and maybe others as well

-- view statistical model output in R. The output are predicted values for each point in a large grid file (~195000 points or polygons), I've been trying to join the predicted values to a shape file and plot it in R, but it just doesn't work. Maybe the file is too large? Perhaps file size is a limitation in R.

Thanks so much for all these training sessions, they are awesome!

Leslie

Leslie A. DeSimone U.S. Geological Survey New England Water Science Center 10 Bearfoot Road Northborough, MA 01532 508-490-5023

ldesimon@usgs.gov

On Wed, Apr 3, 2019 at 10:00 AM Lindsay Carr notifications@github.com wrote:

Thanks for the idea! Any specific applications? Creating maps for publication, or doing more GIS-like analyses? Do you have specific shapefiles or spatial data you would like to map?

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lindsayplatt commented 5 years ago

Closed by #22