Hello, This point is a fine detail, but it may be important to me. >From reading Fred James'reference manual for version 94.1 of Minuit, I find on page 9 a list of iflag values used in the call to FCN. It has I flag = 1,2, and 3 (see page 9). It seems that FCN is called with iflag=1 for startup. So I test on iflag, as in the example, and so some initialization there. But when I run TMinuit, I get the following output (having sent print level to 3.) ********** ** 4 **MIGRAD 500 1 ********** FIRST CALL TO USER FUNCTION AT NEW START POINT, WITH IFLAG=4. START MIGRAD MINIMIZATION. STRATEGY 1. CONVERGENCE WHEN EDM .LT. 1.00e-03 FCN=-0.519027 FROM MIGRAD STATUS=INITIATE 21 CALLS 22 TOTAL What does IFLAG=4 mean? "First call to use function" suggests to me that I should test on iflag==4 to do my initializations. Thank you for any help. Chris ================================================================= = = = Chris Jillings = = Department of Physics phone/voice mail: (613) 545-6000x4805 = = Queen's University fax: (613) 545-6813 = = Kingston, Ontario email: chris@sno.phy.queensu.ca = = Canada, K7L 3N6 web: http://sno.phy.queensu.ca = = = =================================================================
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