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MarB		#21 Posted : 11 December 2019 19:31:21(UTC)
Rank: Advanced Member Groups: Registered Joined: 21/10/2016(UTC) Posts: 84 Was thanked: 21 time(s) in 17 post(s)		Originally Posted by: Jean Giraud Hope this document will tranquilize visitors/users ! Jean. If that's what you think.
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Jean Giraud		#22 Posted : 12 December 2019 01:05:16(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		Originally Posted by: MarB If that's what you think. Does it work for you ... SS 7251 users please confirm ?
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CBG		#23 Posted : 12 December 2019 03:25:41(UTC)
Rank: Advanced Member Groups: Registered Joined: 14/10/2015(UTC) Posts: 308 Was thanked: 77 time(s) in 58 post(s)		Originally Posted by: Jean Giraud Originally Posted by: MarB If that's what you think. Does it work for you ... SS 7251 users please confirm ? Hello Jean Yes, It works Carlos
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ndtma		#24 Posted : 12 December 2019 06:09:00(UTC)
Rank: Advanced Member Groups: Registered Joined: 05/06/2014(UTC) Posts: 348 Location: Colombo Was thanked: 125 time(s) in 82 post(s)		Originally Posted by: Jean Giraud Originally Posted by: MarB [url=/forum/yaf_postsm60156_Program-for-Linear-and-Polynomial-Fit.aspx#post60156][/url]If that's what you think. Does it work for you ... SS 7251 users please confirm ? It works. Thank you MarB.
		Look within!... The secret is inside you. Best Regards Eng. NDTM Amarasekera - Sri Lanka
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ndtma		#25 Posted : 12 December 2019 13:41:20(UTC)
Rank: Advanced Member Groups: Registered Joined: 05/06/2014(UTC) Posts: 348 Location: Colombo Was thanked: 125 time(s) in 82 post(s)		Originally Posted by: MarB That's my solution - to separate the functions from matrix building, - to use vectorize for speed Apparently, the function f(#x):=1 if n=0 has a problem?. Or is it redundant? For values n>0, the "otherwise" condition yields correct results irrespective of values in "if" condition. Please check. Edited by user 12 December 2019 13:47:51(UTC)  | Reason: Not specified
		Look within!... The secret is inside you. Best Regards Eng. NDTM Amarasekera - Sri Lanka
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MarB		#26 Posted : 12 December 2019 13:53:51(UTC)
Rank: Advanced Member Groups: Registered Joined: 21/10/2016(UTC) Posts: 84 Was thanked: 21 time(s) in 17 post(s)		Hi, just put the 1 into a 1x1 matrix. That's all. (And if you want to use units with the X Vector, just remove the eval and evaluate symbolically.) Originally Posted by: MarB Originally Posted by: ndtma Originally Posted by: MarB That's my solution - to separate the functions from matrix building, - to use vectorize for speed Apparently, the function f(#x):=1 if n=0 has a problem?. Or is it redundant? For values n>0, the "otherwise" condition yields correct results irrespective of values in "if" condition. Please check.
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ndtma		#27 Posted : 12 December 2019 16:21:08(UTC)
Rank: Advanced Member Groups: Registered Joined: 05/06/2014(UTC) Posts: 348 Location: Colombo Was thanked: 125 time(s) in 82 post(s)		Originally Posted by: MarB just put the 1 into a 1x1 matrix. That's all. Hi Still the same error when n=0. Better if you can post the SM file please. Edited by user 12 December 2019 16:25:22(UTC)  | Reason: Not specified
		Look within!... The secret is inside you. Best Regards Eng. NDTM Amarasekera - Sri Lanka
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MarB		#28 Posted : 12 December 2019 17:21:42(UTC)
Rank: Advanced Member Groups: Registered Joined: 21/10/2016(UTC) Posts: 84 Was thanked: 21 time(s) in 17 post(s)		Sorry, I didn't realize, that vectorize behaves unexpectedly (to me), when the function does not include 'x'. So I changed f to f(x):=[1+0*x] and now it works. The file is attached. PolyFit.sm (12kb) downloaded 17 time(s). I would expect the results of g and h to be the same, and to be a 3 items long vector.
1 user thanked MarB for this useful post.		on 12/12/2019(UTC)
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ndtma		#29 Posted : 12 December 2019 17:49:54(UTC)
Rank: Advanced Member Groups: Registered Joined: 05/06/2014(UTC) Posts: 348 Location: Colombo Was thanked: 125 time(s) in 82 post(s)		Hi Now I get same results as yours. But the result (19.0833) of the Polyfit() function when n=0 ----> Does it have any meaning? I have no idea. I was only testing it for all possible conditions.. Cheers MarB. Note: Incidentally, 19.0833 happens to be the Mean of Y vector. Edited by user 12 December 2019 17:55:26(UTC)  | Reason: Additional checks
		Look within!... The secret is inside you. Best Regards Eng. NDTM Amarasekera - Sri Lanka
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Jean Giraud		#30 Posted : 12 December 2019 19:06:39(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		IMHO ... no need to complicate matters. Modular design is easier to fix. More automated is OK if you intend to poly for the entire Planet. PolyFit (2).sm (47kb) downloaded 17 time(s).
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Razonar		#31 Posted : 12 December 2019 21:12:19(UTC)
Rank: Advanced Member Groups: Registered Joined: 28/08/2014(UTC) Posts: 1,357 Was thanked: 815 time(s) in 516 post(s)		Originally Posted by: ndtma ... But the result (19.0833) of the Polyfit() function when n=0 ----> Does it have any meaning? I have no idea. I was only testing it for all possible conditions.. ... Hi. This is in case you want to interpolate with an horizontal line. PolyFit.sm (160kb) downloaded 26 time(s). PolyFit.pdf (749kb) downloaded 19 time(s). Best regards. Alvaro.
1 user thanked Razonar for this useful post.		on 12/12/2019(UTC)
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ndtma		#32 Posted : 12 December 2019 21:15:52(UTC)
Rank: Advanced Member Groups: Registered Joined: 05/06/2014(UTC) Posts: 348 Location: Colombo Was thanked: 125 time(s) in 82 post(s)		Thank you, Alvaro.
		Look within!... The secret is inside you. Best Regards Eng. NDTM Amarasekera - Sri Lanka
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