M-CHIPS home

Manual
Getting Started
Starting M-chips
Loading data
Normalizing the data
Filtering the data
Exploring the data

FAQs

UNIX

Questions, comments, contributions?

Normalize the data

  • Background subtraction:
    Next thing that you are asked is, if you want to subtract local background: press "yes" or "no".

  • Normalization:

    • In the next menu you choose the type of normalization, if you have no idea about that:
      just click the "smiley-button".
    • This is also true for some further selections.
    • In the next menu you choose the normalization method.
    • Now a lot of scatter plots and accompanying correlation coefficients appear and you can have a look at them either in a logarithmic or linear scale.
    • To speed up the further analysis process, it may be good to "close them all".
    • Then you are asked if some hybs showing a bad correlation coefficient (< 0.8) should be discarded:
      type in your cut off value for the correlation coefficient.
    • It is written, which measurements are discarded.
    • You can decide, if you want to re-normalize or not.
    • Now you have the possibility to save your normalized dataset; e.g. "name_of_saved_file"
      (they are automatically saved in a ".mat"-format; if you want to reuse this file,
      • Start matlab
      • >>  load  name_of_saved_file
      • >>  cont
      and analysis will continue exactly at this point).
    • After this, a menu line ("File, Edit, View, Analysis, Database, Help")
      will appear where you can choose different kinds of analysis, filters, etc.

Please find more information about M-CHiPS normalization in the FAQs or under the headings Data analysis --> Preprocessing --> Normalization at http://kups.ub.uni-koeln.de/volltexte/2003/364/pdf/11w1296.pdf