[R] (no subject)

[Uwe Ligges]

Aimin Yan wrote:
> How to use "contour" function?
> I type "contour(th1,th2,SumofSquares,levels=c(seq(1000,4000,200)))"
> 
> But I didn't see contour in the plot, I guess it is because my data is 
> so big that contour is out of range.
> Does anybody know how to fix this problem?


By either not specifying "levels", or by specifying it reasonable, i.e. 
values within the range of your matrix "SumofSquares".
Are there values < 4000 in that matrix? You should see a line in that case.

Uwe Ligges



> 
> here th1 is a 1x101 array(158741.8-298529.6)
> th2 is another 1X101 array(-0.0058352269-0.2093140935)
> 
> SumofSquares is a 101X101 matrix
> here is 1st row of this matrix:
> SumofSquares[1,]
>   [1] 58276823733 45108959063 36097139203 29640961600 24852628699 
> 21205691351 18370693380 16132073683 14343415033
>  [10] 12902043760 11733956375 10784525542 10012575486  9386493133  
> 8881608427  8478388277  8161165261  7917225781
>  [19]  7736144795  7609292848  7529465556  7490601474  7487564677 
> 7515975345  7572076406  7652627560  7754820315
>  [28]  7876209323  8014656457  8168284935  8335441457  8514664731 
> 8704659189  8904272893  9112478876  9328359317
>  [37]  9551092042  9779938969 10014236185 10253385367 10496846372 
> 10744130780 10994796282 11248441758 11504702968
>  [46] 11763248764 12023777744 12286015297 12549710985 12814636220 
> 13080582187 13347358003 13614789066 13882715573
>  [55] 14150991196 14419481894 14688064834 14956627427 15225066452 
> 15493287270 15761203103 16028734388 16295808187
>  [64] 16562357650 16828321525 17093643719 17358272883 17622162049 
> 17885268285 18147552386 18408978592 18669514322
>  [73] 18929129935 19187798513 19445495656 19702199292 19957889512 
> 20212548406 20466159917 20718709708 20970185038
>  [82] 21220574642 21469868628 21718058379 21965136456 22211096520 
> 22455933247 22699642261 22942220059 23183663956
>  [91] 23423972019 23663143017 23901176371 24138072104 24373830797 
> 24608453551 24841941947 25074298011 25305524181
> [100] 25535623276 25764598466
> 
> 
> 
> thanks,
> Aimin Yan
> 
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