convert to grid file

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Hi
Hi

I computed probability in each cell.
I have:

 [99883,] -0.0062412957690
 [99884,] -0.0062412957690
 [99885,] -0.0062412957690
 [99886,] -0.0062412957690
 [99887,] -0.0062412957690
 [99888,] -0.0062412957690
 [99889,]  0.9909126638948
 [99890,]  0.9909126638948
 [99891,]  0.9909126638948
 [99892,]  0.9909126638948
 [99893,]  0.9909126638948
 [99894,]  0.9909126638948
 [99895,]  0.9909126638948
 [99896,]  0.9909126638948
 [99897,]  0.9909126638948
 [99898,]  0.9909126638948
 [99899,]  0.9909126638948
 [99900,]  0.9909126638948
 [99901,]  0.9909126638948
 [99902,]  0.9909126638948
 [99903,]  0.9909126638948

 [99999,] -0.0062412957690
 [ reached getOption("max.print") -- omitted 839931 rows ]]

How want to convert this matrix to a grid file with 970*960 pixel.
Assuming your object is one column matrix called mat1

You can simply change its dimension

dim(mat) <- c(970, 960)

regards
Petr

Thanks alot
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Hi
Thank you Petr

It work. 

Now I have a matrix 970*960. If I want to convert to spatial grid (each 
pixel has x and y coordinate). 
How can I do? 
I do not understand. What do you want to do with your data? Maybe you 
could consult spatial package or CRAN Task views. One option could be to 
make vectors of row and columns coordinates. But it depends on what you 
want to do with your data.

Regards
Petr
Thanks

From: Petr PIKAL <petr.pikal at precheza.cz>
To: azam jaafari <azamjaafari at yahoo.com>
Cc: R-help <r-help at r-project.org>
Sent: Thursday, September 1, 2011 8:59 AM
Subject: Re: [R] convert to grid file

Hi

Hi

I computed probability in each cell.
I have:

 [99883,] -0.0062412957690
 [99884,] -0.0062412957690
 [99885,] -0.0062412957690
 [99886,] -0.0062412957690
 [99887,] -0.0062412957690
 [99888,] -0.0062412957690
 [99889,]  0.9909126638948
 [99890,]  0.9909126638948
 [99891,]  0.9909126638948
 [99892,]  0.9909126638948
 [99893,]  0.9909126638948
 [99894,]  0.9909126638948
 [99895,]  0.9909126638948
 [99896,]  0.9909126638948
 [99897,]  0.9909126638948
 [99898,]  0.9909126638948
 [99899,]  0.9909126638948
 [99900,]  0.9909126638948
 [99901,]  0.9909126638948
 [99902,]  0.9909126638948
 [99903,]  0.9909126638948

 [99999,] -0.0062412957690
 [ reached getOption("max.print") -- omitted 839931 rows ]]

How want to convert this matrix to a grid file with 970*960 pixel.
Assuming your object is one column matrix called mat1

You can simply change its dimension

dim(mat) <- c(970, 960)

regards
Petr

Thanks alot
   [[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide 
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

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Hi

I do not know sp package therefore I can not help you. Anyway without 
knowing "what is wrong" and without some reproducible example you hardly 
get any reasonable answer.

It seems to me that your d list especially x and y is not what you expect 
to be. 

see

str(d)

430071.4887:460006.8067

will resilt in row of integers from 430071 to 460006. I believe it is not 
what you want.

Regards
Petr
Thank you

I want to make a map from my spatial data that I can show it in GIS. 
I used the package sp and 

d<- list(x=430071.4887:460006.8067, y =3390040.0591:3420006.2701, z = 
matrix(mat, 970, 960))
gt<- GridTopology(cellcentre.offset = c(d$x[1], d$y[1]),
cellsize=c(diff(d$x[1:2]), diff(d$y[1:2])), cells.dim = dim(d$z))
grdatts<-SpatialGridDataFrame(gt, data.frame(depth =
as.vector(d$z[,ncol(d$z):1])))
image(grd.atts, axes=TRUE)
grd<-SpatialGridDataFrame(gt, data.frame(depth =
as.vector(d$z[,ncol(d$z):1])))

It doesn't work and I think it is wrong. 

Thanks

From: Petr PIKAL <petr.pikal at precheza.cz>
To: azam jaafari <azamjaafari at yahoo.com>
Cc: R-help <r-help at r-project.org>
Sent: Thursday, September 1, 2011 10:22 AM
Subject: Re: [R] convert to grid file

Hi

Thank you Petr

It work. 

Now I have a matrix 970*960. If I want to convert to spatial grid 
(each
pixel has x and y coordinate). 
How can I do? 
I do not understand. What do you want to do with your data? Maybe you 
could consult spatial package or CRAN Task views. One option could be to 
make vectors of row and columns coordinates. But it depends on what you 
want to do with your data.

Regards
Petr

Thanks

From: Petr PIKAL <petr.pikal at precheza.cz>
To: azam jaafari <azamjaafari at yahoo.com>
Cc: R-help <r-help at r-project.org>
Sent: Thursday, September 1, 2011 8:59 AM
Subject: Re: [R] convert to grid file

Hi

Hi

I computed probability in each cell.
I have:

 [99883,] -0.0062412957690
 [99884,] -0.0062412957690
 [99885,] -0.0062412957690
 [99886,] -0.0062412957690
 [99887,] -0.0062412957690
 [99888,] -0.0062412957690
 [99889,]  0.9909126638948
 [99890,]  0.9909126638948
 [99891,]  0.9909126638948
 [99892,]  0.9909126638948
 [99893,]  0.9909126638948
 [99894,]  0.9909126638948
 [99895,]  0.9909126638948
 [99896,]  0.9909126638948
 [99897,]  0.9909126638948
 [99898,]  0.9909126638948
 [99899,]  0.9909126638948
 [99900,]  0.9909126638948
 [99901,]  0.9909126638948
 [99902,]  0.9909126638948
 [99903,]  0.9909126638948

 [99999,] -0.0062412957690
 [ reached getOption("max.print") -- omitted 839931 rows ]]

How want to convert this matrix to a grid file with 970*960 pixel.
Assuming your object is one column matrix called mat1

You can simply change its dimension

dim(mat) <- c(970, 960)

regards
Petr

Thanks alot
   [[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide 
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.