Displaying 4 results from an estimated 4 matches for "tave".
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have
2011 Mar 14
3
increase a value by each group?
...3
3852 site_B 147 3852.03
3852 site_B 147 3852.03
3852 site_B 147 3852.03
54962 site_C 27 54962.01
54962 site_C 27 54962.01
54962 Site_D 217 54962.02
54962 Site_D 217 54962.02
54962 Site_D 217 54962.02
54962 Site_D 217 54962.02
Currently I found the way to increase the depth but not like I need,
tave = my_data$Depth + (ave(my_data$Depth, my_data$index, FUN=seq_along))/100
Depth s_name index test
3852 Site_1 144 3852.01
3852 Site_1 144 3852.02
3852 Site_1 144 3852.03
3852 site_A 145 3852.01
3852 site_A 145 3852.02
3852 site_A 145 3852.03
3852 site_A 145 3852.04
3852 site_B 147 3852.01
3852 site...
2007 Oct 10
1
error message with option checkBuild in update.packages in R 2.6.0
Hi
System: Linux Open SuSE 10.2
I upgraded to R 2.6.0 and wanted to upgrade my packages as well. I tried
to use the checkBuild=TRUE option in update.packages, it asked me if I
wanted to update the package and I answered with yes, and finally ig
tave me the error message unknown parameter "checkBuild" in function
install.packages.
My question: is the option still necessary or is the checkBuild done
automatically? IF yes, I just update.packages without the option and
don't woryy.
Rainer
2013 May 01
0
Thornthwaite Method in R
Hi,Has anybody worked with thornthwaite method to calculate the daily evapotranspiration ? I have used the following code to calculate monthly evaporation but what I need is daily evapotranspiration.
Epot <- thornthwaite(Tave, lat, na.rm = FALSE) # Evaluates evapotranspiration for each month.
Do you have any code which works for daily timestep ? Its more technical question, may be some hydrologist has gone across it already.
Thanks in advance !Anup KhanalNTNU
..................Anup KhanalNorwegian Institute of scienc...
2011 Aug 03
4
slow computation of functions over large datasets
Hello there,
I’m computing the total value of an order from the price of the order items
using a “for” loop and the “ifelse” function. I do this on a large dataframe
(close to 1m lines). The computation of this function is painfully slow: in
1min only about 90 rows are calculated.
The computation time taken for a given number of rows increases with the
size of the dataset, see the example with