Contour plot 2005-02-08 - By Romain Fran?ois
Le 08.02.2005 17:43, dhkblaszyk@(protected) a ??crit :
>I understand that I need to have a (in this case) square matrix with all the
>data. But the question now is;
>
>- can the contourplot not interpolate the missing values
>
>
>
I think it doesn't (see (1) below)
>or alternatively
>
>- I have fit a model to the z data (z = 100 + 0.5x + 0.5y). How can I make
>from this model a "square" matrix z to make a contour plot?
>
>
>
Hello,
try something like that :
x <- y <- 1:10
z <- 100+0.5*outer(x,y,FUN="+")
contour(x,y,z)
(1) :
z[3:4,3:4] <- NA #putting some missing values
contour(x, y, z,nlevels=20)
Romain.
>>Hello,
>>
>>I would like to make a contourplot of the following data;
>>
>>
>>
>>>>x <- 1:10
>>>>y <- 1:10
>>>>z <- 100:110
>>>>
>>>>
>>>By doing >contour(x,y,z) I get the following error;
>>>
>>>"Error in contour.default(x, y, z) : no proper `z' matrix specified"
>>>
>>>How do I fix this??
>>>
>>>
>>x and y specify a grid and thus z must provide a value for each
>>combination of the x's and y's! For example:
>> x <- y <- 1:10
>> contour(x, y, outer(x, y))
>>Also look at
>> outer(x, y)
>>and read ?contour.
>>
>>Z
>>
>>
>>
>>>Kind regards, Datius Blaszijk
>>>
>>>[[alternative HTML version deleted]]
>>>
>>>______________________________________________
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>>>PLEASE do read the posting guide!
>>>http://www.R-project.org/posting-guide.html
>>>
>>>
>>>
>
>______________________________________________
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>
>
>
>
--
Romain FRANCOIS : francoisromain@(protected)
page web : http://addictedtor.free.fr/ (en construction)
06 18 39 14 69 / 01 46 80 65 60
_______________________________________________________
Etudiant en 3eme ann??e
Institut de Statistique de l'Universit?? de Paris (ISUP)
Fili??re Industrie et Services
http://www.isup.cicrp.jussieu.fr/
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