Hi Hajime,
tree->Draw("aa[][]"); is not supported in this special case.
but you can do:
tree->Draw("a[0][]");
tree->Draw("a[1][]");
tree->Draw("a[2][]");
Rene Brun
Hajime Nanjyo wrote:
>
> Dear ROOTers,
>
> I have a trouble concerning a variable size two dimensional array.
>
> I defined a class A with a member 'int *aa[3]; //[n]'.
> (A mamber 'int n;' also included in the class A.)
> A shared library was construced successfully for the ROOT I/O.
> I could write or read a TTree in a TFile successfully
> with the shared library but could not draw a histogram
> with TTree::Draw("aa[][]") correctly in a ROOT interactive session.
>
> Please help me to solve the problem.
>
> By the way, I think it was useful if a syntax like
> 'int (*aa)[3];//[n]' was supported in rootcint.
> Is it possible?
>
> Best Regards,
> Hajime
>
> P.S.
>
> I used the ROOT at /afs/cern.ch/sw/root/v4.00.06/rh73_gcc32/root
> under Red Hat Linux 7.3 with gcc version 3.2.
>
> The simple code to illustrate the problem was attached.
> Files listed below was included in it.
> A.h,A.C,ALinkDef.h // for class A
> write.C // to write class A to TFile
> read.C // to read the TFile
> make.sh // make shell scrip
> run.C // for '.x run.C' in ROOT session
>
> The content of the file make.sh was as follows.
> //////////////////////////////////////////////////////////////
> rootcint -f ADict.C -c A.h ALinkDef.h
>
> g++ -g --shared `root-config --cflags` `root-config --libs` \
> -I. \
> -o libData.so \
> A.C ADict.C
>
> g++ -g -o write `root-config --cflags` `root-config --libs` \
> write.C -L. -lData
> g++ -g -o read `root-config --cflags` `root-config --libs` \
> read.C -L. -lData
> //////////////////////////////////////////////////////////////
>
> Run as follows.
> source make.sh
> ./write test.root
> ./read test.root
> #--> succesfully operated
>
> ROOT [0] .x test.C
> #--> 'tree->Draw("aa[][]");' didn't work.
>
> --------------------------------------------------------------------------------
> Name: test.tgz
> test.tgz Type: unspecified type (Application/Octet-Stream)
> Encoding: base64
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