Re: ascii files

Dear Rene, thank you for the information. I have other interesting functionalities, like the calculation with columns,
the selection of lines on the basis of condition related to a column, the removing or the addition of a column... in short, the functionalities present in spreadsheves (such as excel). These functionalities are found indeed in one or other root class but are not joined together, which obliges conversion regularly.

Regards,
Vincent

Rene Brun wrote:

> Hi Vincent,
>
> Note that most of the functionality in your class is already available
> via
> TGraph(const char *filename, const char *format="%lg %lg", Option_t
> *option="");
> TNtuple::ReadFile(const char *filename, const char
> *branchDescriptor="")
> TTree::ReadFile(const char *filename, const char *branchDescriptor="")
>
> see also the TGraphErrors constructors
>
>> From the Tree/TNtuple you can select any of the columns (or expressions
>
> of columns) and in addition have selections on the rows.
>
>
> Rene Brun
>
>
> On Thu, 23 Jun 2005, Vincent Roberfroid wrote:
>
>> Hi David,
>>
>> I created a class to handle simple ascii files with root.
>> You can use it if you want.
>> http://www.fynu.ucl.ac.be/users/v.roberfroid/work/stuffs/matrixRoot_html/matrixRoot.html
>>
>> This documentation must be updated. The code works with all version
>> of root > 3.02.
>> I put in attachment the code source. Regards,
>> Vincent
>>
>
>
Received on Tue Jun 28 2005 - 09:24:25 MEST