Re: Problem avec les donnees pour ACM

From: ZHANG De-Xing (
Date: Tue Apr 22 2003 - 14:48:33 MEST

Dear Stephane,

Thank you very much for your help. Excuse me first to write the message in
English - I have not written message in French since 1992 and the keyboard
here is not convenient neither. Actually, we are carrying out the
so-called Constant Row Total-Multiple Correspondence Analysis (Guinand
1996, Biological Journal of the Linnean Society, vol. 58, pp173) using the
Fuzzy Correspondence Analysis program in the ADE-4 package. We use the
TextToBin-BlocTo1Categ option to make a binary category file, and the
input text file has only one column. We need to prepare a few files before
we can use FuzzyVar-Read Fuzzy File to prepare the .fuz file for Fuzzy
Correspondence Analysis. With small data sets, we don't have any problem.
But when processing a large data set, truncated files were produced from
'TextToBin-BlocTo1Categ' step. ADE-4 said that the binary matrix file
(the raw data file) is too large to be read by ADEbin. The data have 26
rows, and 8 variables with 35, 16, 46, 35, 26, 70, 64 and 27
categories, respectively (319 columns in total). There should be no
problem with computer power. I'm running ADE-4 on a Windows-XPP PC (DELL
Optiplex, Pentium 4, CPU3.06GHz, RAM 1.00Gb)

Could you, and anyone else on the list, help me on this issue please?
Thank you very much..


On Tue, 22 Apr 2003, Stephane Dray wrote:

> La réponse en anglais..
> No problem withe the size of files... probably misuse of ADE-4.
> TextToBin-BlocTo1Categ is an option only for ONE categorical variable.
> I do not really understand what is the format of your data. You must
> be more precise (give an example of -your original table). If you
> have 36 rows (species) and 8 variables (traits, I suppose). You must
> use the Categvar module and may be "Read Label File". Give more
> information if you want more help.
> Sincerely,
> >Bonjour tout le monde,
> >
> >Pouriez vous m'aider en l'issue ci-desous SVP: J'ai du mal de faire une
> >Analyse ACM sur un groupe de donnees. En effet, le programme
> >'TestToBin-BlocTo1Categ' ne travaille pas correctement. Il concerne une
> >matrice de donnees de 26x319 (26 especes, 8 variables, totalement 319
> >categories). Est-ce que les donnees sont trop grandes?
> >
> >Merci d'avance pour vos remarques.
> >
> >De-Xing
> >----
> >Dear All,
> >
> >I have been trying to carry out a MCA analysis on some population genetic
> >data, but failed with a large data set. I wonder whether this is due
> >to the data set is too large? Has anyone ever had similar problem? Your
> >help is gratefully appreciated. The data table
> >concerned has 26 rows and 319 columns, with 8 blocks each having some
> >16-70 categories. Could you please help me on this? Thank you very much.
> >(The 'TextToBin-BlocTo1Categ' progran only recognised 7 blocks, and data
> >in the related files are truncated.)
> >
> >Yours sincerely,
> >De-Xing ZHANG
> >----------------------------------
> >De-Xing Zhang
> >PO Box 70
> >Institute of Zoology
> >Chinese Academy of Sciences
> >25 Beisihuan-Xi Road
> >Beijing 100080
> >P. R. China
> >
> >Tel: (+86) 010 6261 2962
> >Fax: (+86) 010 6261 2962
> >E-mail:

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