Dear all;
Many thanks for your replies. This was not homework. I apologize.
Let me explain more.
There is a dam constructed in a valley with the highest elevation of 1255
m. The area of its reservoir can be calculated by drawing a polygon around
the water and it is known.
I have the Digital Elevati
John,
Your reaction was what my original reaction was until I realized I had to
find out what a DEM file was and that contains enough of the kind of
depth-dimension data you describe albeit what may be a very irregular cross
section to calculate for areas and thence volumes.
If I read it correctl
With respect to duplicated.data.frame taking account of row names to return
all the rows as unique: thinking about this some more, I can see that making
sense in isolation, but it's at odds with the usual behaviour of duplicated for
other classes, e.g. primitive vectors, where it doesn't take a
Chris, since it does indeed look like homework, albeit a deeper looks
suggests it may not beI think we can safely answer the question:
>Is there any way to write codes to do this in R?
The answer is YES.
And before you ask, it can be done in Python, Java, C++, Javascript, BASIC,
FORTRAN and prob
Aside from the fact that the original question might well be a class exercise
(or homework), the question is unanswerable given the data given by the
original poster. One needs to know the dimensions of the reservoir, above and
below the current waterline. Are the sides, above and below the wate
Às 13:27 de 07/04/2024, javad bayat escreveu:
Dear all;
I have a question about the water level of a reservoir, when the volume
changed or doubled.
There is a DEM file with the highest elevation 1267 m. The lowest elevation
is 1230 m. The current volume of the reservoir is 7,000,000 m3 at 1240 m.
Homework?
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
On April 7, 2024 8:27:18 AM EDT, javad bayat wrote:
>Dear all;
>I have a question about the water level of a reservoir, when the volume
>changed or doubled.
>There is a DEM file with the highest elevation 1267 m. T
Dear all;
I have a question about the water level of a reservoir, when the volume
changed or doubled.
There is a DEM file with the highest elevation 1267 m. The lowest elevation
is 1230 m. The current volume of the reservoir is 7,000,000 m3 at 1240 m.
Now I want to know what would be the water leve
В Fri, 5 Apr 2024 16:08:13 +
Jorgen Harmse пишет:
> if duplicated really treated a row name as part of the row then
> any(duplicated(data.frame(…))) would always be FALSE. My expectation
> is that if key1 is a subset of key2 then all(duplicated(df[key1]) >=
> duplicated(df[key2])) should alwa
9 matches
Mail list logo
