Hi,
this questions is not really about R but it would be great if somebody could
point me to a forum or so where I can get help with this.
I only know a few basics about GIS and have a problem with some UTM coordinates
from a survey.
Coordinates are given as, e.g.
3258843 32780
which are
Hi,
I double-checked your results with an online conversion tool
(http://www.rcn.montana.edu/resources/tools/coordinates.aspx)
and got the same answer.
That means that your R code is fine, and there's something
wrong with the original data. If possible, you should check with
the source. There
Hi Sarah,
many thanks for checking this. I looked at the documentation again and this is
the info about the GPS receiver setting they used:
POSITION FRMT: hddd.d
MAP DATUM: WGS 84
CDI: +-0.25
UNITS: METRIC
HEADINGS: GRID E000
DEGEES
I'm not sure if this is any useful.
Any idea what I
Hi,
It seems the problem with your data. It seems there is inconsistency in your
data.
Here: 3258843 32780
You have 7 digits for x and 5 digits for y
And here are the coordinates of Kampala: 459199 33160 on WGS84
You have 6 digits for x and 5 digits for y
Ageel
It looks like Uganda is mostly but not entirely in 36N. It's possible
the data switches zones, or that it keeps the same zone throughout
and uses northing and/or easting values outside the usual range.
Plotting the entire dataset as x, y coordinates would answer that
question very quickly.
Here's
Dear list members,
Does anybody have suggestions for the best way of creating density heatmaps
for geographical data? With ‘density heatmaps’ I’m not thinking of heatmaps
as in R’s ‘heatmap’ function, but more along the lines of
http://www.heatmapapi.com/
or
Many thanks for your replies Ageel and Sarah!
I still have no clue what to do with the data to make it usable.
The northings are in the range of 26237 to 38149 which seem to make sense but
the eastings are in the range of 3252446 to 3264111 and these don't seem to be
in Uganda.
If I use one of
On Wed, Oct 13, 2010 at 4:14 PM, Werner W. pensterfuz...@yahoo.de wrote:
Coordinates are given as, e.g.
3258843 32780
which are supposedly zone 36N on system WGS84 (according to the documentation).
The point should be close to Kampala which has the coordinates 0.3°, 32.63°
and UTM 36N
My suggestion is to convert your .grd files to self-descriptive ones, for
example netcdf. Considering that you have some experience with GrADS, a helpful
tutorial is available
on
I imported a DBF with more than 256 columns using read.dbf. But when i write
it back out with write.dbf, only the first 256 columns are written out. Is
there a way to export dbf files with more columns. (I actually need about
1200 columns)
thanks
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Dear GeoR users,
Is there a function to convert ascii grid (created with adehabitat kernel
function) into a points format (ppp or others).
Thanks
Arnaud
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On 10/13/2010 12:32 PM, kapo coulibaly wrote:
I imported a DBF with more than 256 columns using read.dbf. But when i write
it back out with write.dbf, only the first 256 columns are written out. Is
there a way to export dbf files with more columns. (I actually need about
1200 columns)
I'm doing Groundwater Modeling and that is the appropriate input format for
the GUI I'm using (Groundwater vistas) for what I'm trying to do. Funny
enough I was able to create a dbf with 512 columns in ArcGIS but as I said I
needed more.
Thanks
On Wed, Oct 13, 2010 at 4:11 PM, Alex Mandel
Hello all,
Here I am with a plot issue - when I try to add legend it does not work at all
times. Can someone tell me what's wrong with my code?
the following legend does not work!
plot(ts(tot_avg1[,1], freq=12, start=c(1981,12), end=c(2009,12)),
ylim=c(min(tot_avg1[,1]), max(tot_avg1[,3])),
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