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 <chocol...@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.
--
--
You received this message because you are subscribed to the ggplot2
mailing list.
Please provide a reproducible example: https://github.com/hadley/
devtools/wiki/Reproducibility
To post: email ggpl...@googlegroups.com
To unsubscribe: email ggplot2+unsubscr...@googlegroups.com
More options: http://groups.google.com/group/ggplot2
---
You received this message because you are subscribed to the Google Groups
"ggplot2" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to ggplot2+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
--
In God we trust, all others bring data.
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
