[R] Steps to create spatial plots

Jeff Newmiller jdnewmil at dcn.davis.ca.us
Tue Jan 16 00:12:48 CET 2018

Also note that there is an R-sig-geo mailing list dedicated to this topic.

You might also like to look at [1] for more on coordinate projections.

[1] https://www.nceas.ucsb.edu/~frazier/RSpatialGuides/OverviewCoordinateReferenceSystems.pdf

On Mon, 15 Jan 2018, Roman Lu?trik wrote:

> You will need to coerce your data into a "spatial" kind, as implemented in
> `sp` or as of late, `sf` packages. You might want to give the vignettes a
> whirl before you proceed.
> Roughly, you will have to coerce the data to Spatial* (you could go for a
> point, raster or grid type, I think) and also specify the projection. Once
> you have that, plotting should be handled by packages.
> Here are a few quick links that might come handy:
> https://cran.r-project.org/web/views/Spatial.html
> http://www.datacarpentry.org/R-spatial-raster-vector-lesson/10-vector-csv-to-shapefile-in-r/
> Cheers,
> Roman
> On Mon, Jan 15, 2018 at 11:22 PM, lily li <chocold12 at gmail.com> wrote:
>> Hi users,
>> I have no clear clue about plotting spatial data. For example, I just have
>> a table with attribute values of each grid cell, such as elevation. Then I
>> have coordinates of the upper left corner in UTM, the number of rows and
>> columns, and grid cell size. How to create spatial plot of elevations for
>> the grid cells, in color ramp? Should I create a spatial grid layer with
>> all the polygons first? Thanks.
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