Dear all, Users of the affy packages will have certainly noticed that the 'development' version has been through various stages of stability. In some case I even advertised for functions, but in many cases by the time people download the package some work has been done and the function of interest does not work any longer. This was particularly true with high-level functions. Major changes(*) are likely to happen in the future, which could make this even more frequent. To try to avoid this, a extensive(**) collection of tests have been put in the directory 'tests/' of the package (we wished we would have done it earlier, but time... time...). Starting with the version number 1.2.1(***), the package you will find on the web passed these tests. Please report non-working functions so we can fix them/add new tests... but remember that some things will not be solved instantly. The 'released' version remains the 'stable' version. Regards, Laurent (*) : Some speed/memory improvements are already done... but there is more to come (see previous post from Rafael). (**) : But not comprehensive... more tests will be added. Currently all the normalization methods, all the background correction method, all the expression values computation method (or 'summary method'), the parsing of CEL files, and the function expresso are tested. (***): Should appear today -- -------------------------------------------------------------- Laurent Gautier CBS, Building 208, DTU PhD. Student DK-2800 Lyngby,Denmark tel: +45 45 25 24 89 http://www.cbs.dtu.dk/laurent