r - data.table way of doing this dcast -

-

i have data.table looks this:

tbl           lon lat hour ens       date value        1: 254  31   12   0 1994010100     0        2: 254  31   12   0 1994010200     0        3: 254  31   12   0 1994010300     0        4: 254  31   12   0 1994010400     0        5: 254  31   12   0 1994010500     0       ---                                   40494956: 269  39   24  10 2007122700   200 40494957: 269  39   24  10 2007122800   130 40494958: 269  39   24  10 2007122900   240 40494959: 269  39   24  10 2007123000   230 40494960: 269  39   24  10 2007123100   150

and 1 looks like:

locs     lon lat  1: 260  33  2: 261  33  3: 262  33  4: 263  33  5: 260  34  6: 261  34

and doing dcast in shape need:

temp <- dcast(tbl[locs], date ~ lon + lat + hour, fun.aggregate=mean, value.var="value")

this want (even column names!) slow. data.table way of doing after reading few threads here, still can't quite work out. latest attempt this:

temp <- tbl[locs, list(mean = mean(value), sd = sd(value)), = list(date, lon, lat, hour)]

to collapse ens variable (which works fine , note calculating sd well), cannot reshape it. reshape attempt is:

temp[, as.list(setattr(list(mean,sd), 'names', list(lon, lat, hour))), by=list(date)] error in setattr(list(mean, sd), "names", list(lon, lat, hour)) :    'names' attribute [3] must same length vector [2]

any of course appreciated. thank you.


Comments

Post a Comment

Popular posts from this blog

java - Run a .jar on Heroku -

-
i trying run .jar file on heroku, , can't find instructions anywhere on how this. have read wants me compile uploading heroku. possible, , if is, how this? if helps, trying run minecraft craftbukkit server, , don't have pom.xml file yet. you didn't provide details i'll try give , people reaches question way it. first of all, create heroku account , create heroku application (assumed have done that). second, need generate application jar , upload heroku. so, open terminal , install heroku cli (assuming unix terminal): $ sudo npm install -g heroku-cli you need have npm , nodejs installed, can check link: https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-16-04 once done that, can use npm update node version acceptable heroku-cli: $ sudo npm install -g n $ sudo n 7.10.0 and run: $ sudo npm install -g heroku-cli in order deploy jars, need install deploy plugin: $ sudo heroku plugins:install heroku-cli-deploy ...
Read more

java - Jtable duplicate Rows -

-
Image
when add new rows in jtable duplicate rows many times this method update jtable public final void tableaucomande(){ ((defaulttablemodel)tabcommande.getmodel()).getdatavector().clear(); session s=hibernateutil.getsessionfactory().opensession(); criteria cr1= s.createcriteria(commande.class); list <commande> lcs=cr1.list() ; criteria cr2= s.createcriteria(lignecommande.class); list <lignecommande> lck=cr2.list() ; if(lcs.size()!=0 && lck.size()!=0) { (commande lc:lcs) { for(lignecommande lig:lck){ ((defaulttablemodel)tabcommande.getmodel()).addrow(new object[]{ lc.getid_cmd(),lc.getnumcmd(),lc.getdate_cmd(),lc.getclient().getnomprenom(), lig.getproduit().getlib_prd(),lig.getquantite(),lig.getproduit().getid_prd() }); } } // tabcommande.setrowselectioninterval(tabcommande.getrowcount()-1,tabcommande.getrowcount()-1); } } this code add add data rows displaye...
Read more

validation - How to pass paramaters like unix into windows batch file -

-
i need pass various parameters .cmd file unix format file.cmd -configuration=value -source=value -flag but, try this: startlocal @echo off cls setlocal set cmdline=%* set configuration= set source= set badargs= set validation= goto main :splitargs echo splitargs(%*) if "%*" neq "" ( /f "tokens=1,2,* delims== " %%i in ("%*") call :assignkeyvalue %%i %%j & call :splitargs %%k ) goto :eof :assignkeyvalue echo assignkeyvalue(%1, %2) if /i %1==-configuration ( set configuration=%2 ) else if /i %1==-source ( set source=%2 ) else ( rem append unrecognised [key,value] badargs echo unknown key %1 set badargs=%badargs%[%1, %2] ) goto :eof :validate echo validating set validation=fail if defined configuration ( echo -configuration ok if defined source ( echo -source ok if not defined badargs ( set validation=success ) ) ) goto :eof :main cl...
Read more