saving large matrices with decimal numbers

Hi everybody,

I am struggling to save txt. or csv. large sparse matrices (1024 X 768 
image size), initialized at 0.1.

 image1[0:10,0:10]
      [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
 [1,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [2,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [3,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [4,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [5,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [6,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [7,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [8,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
 [9,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[10,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1

with small distributions located at different points of matrix.
If I try the same matrix but initialized at 0, it can save it.

It seems that R manages to save up around 800 X 600 decimal matrices but 
for bigger sizes the output is an empty file. Does anyone know whether 
there is a limit in saving such matrices and how can I work around this 
problem?

Thanks a lot,

Regards,

Moreno

Please tell us what you did exactly when you got the empty file:

Moreno Ignazio Coco wrote:

Hi everybody,

I am struggling to save txt. or csv. large sparse matrices (1024 X   
768 image size), initialized at 0.1.

image1[0:10,0:10]
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[2,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[3,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[4,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[5,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[6,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[7,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[8,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[9,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[10,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1

with small distributions located at different points of matrix.
If I try the same matrix but initialized at 0, it can save it.

It seems that R manages to save up around 800 X 600 decimal   
matrices but for bigger sizes the output is an empty file. Does   
anyone know whether there is a limit in saving such matrices and   
how can I work around this problem?

Please tell us what you did exactly when you got the empty file:

image[1:10, 1:10]

Please tell us what you did exactly when you got the empty file:

well, that's exactly the point, I didn't do anything fancy or special, 
just save the matrix I gave you before (1024 X 768) either in format 
txt.

write.table(image, "~/mydata/blablabla/data.txt", col.names=F, 

or csv:

write.csv (image, "~/mydata/blablabla/data.csv")


both cases the output is an empty file. Do you know what can be the 

Thanks a lot,

Moreno

  write.csv (image, 
"/afs/inf.ed.ac.uk/user/s07/s0788806/R/r_data/ProdEyeTrack/DataFrame/
Clustered/Clut/Cluster1/Cl1Verb-tr.csv.1")



Quoting Uwe Ligges <ligges at statistik.tu-dortmund.de>:

Moreno Ignazio Coco wrote:

Hi everybody,

I am struggling to save txt. or csv. large sparse matrices (1024 X 
768 image size), initialized at 0.1.

image1[0:10,0:10]
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[2,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[3,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[4,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[5,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[6,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[7,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[8,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[9,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[10,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1

with small distributions located at different points of matrix.
If I try the same matrix but initialized at 0, it can save it.

It seems that R manages to save up around 800 X 600 decimal 
matrices but for bigger sizes the output is an empty file. Does 
anyone know whether there is a limit in saving such matrices and 
how can I work around this problem?

Please tell us what you did exactly when you got the empty file:

-- 
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

Please tell us what you did exactly when you got the empty file:

well, that's exactly the point, I didn't do anything fancy or special, 
just save the matrix I gave you before (1024 X 768) either in format txt.

write.table(image, "~/mydata/blablabla/data.txt", col.names=F, row.names=F)

or csv:

write.csv (image, "~/mydata/blablabla/data.csv")


both cases the output is an empty file. Do you know what can be the 
problem?

Thanks a lot,

Moreno

 write.csv (image,  
"/afs/inf.ed.ac.uk/user/s07/s0788806/R/r_data/ProdEyeTrack/DataFrame/Clustered/Clut/Cluster1/Cl1Verb-tr.csv.1") 




Quoting Uwe Ligges <ligges at statistik.tu-dortmund.de>:

Moreno Ignazio Coco wrote:

Hi everybody,

I am struggling to save txt. or csv. large sparse matrices (1024 X  
768 image size), initialized at 0.1.

image1[0:10,0:10]
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[2,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[3,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[4,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[5,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[6,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[7,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[8,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[9,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1
[10,]  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1  0.1   0.1

with small distributions located at different points of matrix.
If I try the same matrix but initialized at 0, it can save it.

It seems that R manages to save up around 800 X 600 decimal  matrices 
but for bigger sizes the output is an empty file. Does  anyone know 
whether there is a limit in saving such matrices and  how can I work 
around this problem?

Please tell us what you did exactly when you got the empty file: