Re: [R-sig-Geo] strange issue of memory converting a raster to a data frame

[Sebastiano Trevisani]

Dear Vlad and Loic,


Some more info on the issue; the error ("Error: cannot allocate vector of
size 1.7 Gb") shows a random behaviour, sometimes things work (e.g., after
a reboot) and sometimes not.

 Anyway this is a reproducible example:

theTest=rast(nrows=5000, ncols=5000, nlyrs=18, xmin=0, ymin=0,
vals=.333)
mem_info(theTest)
theDataFrame=as.data.frame(theTest)



Sebastiano




On Mon, Jan 23, 2023 at 7:18 PM Sebastiano Trevisani 
wrote:

> Thank you Vlad!
> This is a good solution, I keep it for future.
>
> My issue is that I would like to understand why things don't work in the
> best performing PC.
>
> I'll do more experiments, to isolate the issue.
>
> Sebastiano
>
>
>
> Sebastiano
>
>
>
> Il lun 23 gen 2023, 18:48 Vlad Amihaesei  ha
> scritto:
>
>> You can try converting each layer to data frame instead of all the layers
>> at once time. You can do this using a loop.
>>
>> r <- terra::rast(file.nc)
>>
>> df<- NULL
>>
>> for( i in 1:nlyr(r)){
>> r1 <-  r[[i]]
>> r1.df <- as.data.frame(r1,xy =T)
>> df <- rbind(df, r1.df)
>> }
>>
>> Best  regards
>>
>> Vlad Alexandru AMIHAESEI
>>
>>
>> On Mon, Jan 23, 2023 at 10:33 AM Sebastiano Trevisani 
>> wrote:
>>
>>> Hi  Loïc,
>>>
>>> thank you for your suggestion! this was one of the possibilities I
>>> checked.
>>> However, I tried with terra.options() to change the memfrac parameter
>>> from
>>> 0.6 to 0.1, so as to force the writing on disc, but things didn't work.
>>> It seems like it is working as 32 bit system, but the R the installation
>>> seems right to 64. Probably I'm missing something very obvious.
>>> I will try to build a reproducible example without the need to upload all
>>> the file.
>>>
>>> Thanks again,
>>>
>>> Sebastiano
>>>
>>> *  Sebastiano Trevisani, Ph.D.*
>>> *Associate Professor*
>>> *Applied and Environmental Geology*
>>>
>>>
>>> *  https://orcid.org/-0001-8436-7798
>>> *
>>> *IUAV University of Venice: www.iuav.it *
>>>
>>> *Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
>>> 1299Mail:strevis...@iuav.it  *
>>> *"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
>>> * riflettono in alcun modo una posizione ufficiale dello IUAV "*
>>> *"The views expressed are purely those of the writer and may not in
>>> any circumstances be regarded as stating an official position of the
>>> IUAV."*
>>>
>>>
>>> On Mon, Jan 23, 2023 at 5:36 PM DUTRIEUX Loic <
>>> loic.dutri...@ec.europa.eu>
>>> wrote:
>>>
>>> > Hi Sebastiano,
>>> >
>>> > Try comparing terra::terraOptions() and terra::mem_info(r) on both
>>> > systems. Just guessing there but it could be that terra is trying to do
>>> > everything in memory and failing on your 16GB system, while taking a
>>> memory
>>> > friendly route on your 8GB system.
>>> >
>>> > Cheers,
>>> > Loïc
>>> > 
>>> > From: R-sig-Geo  on behalf of
>>> Sebastiano
>>> > Trevisani 
>>> > Sent: 23 January 2023 12:30:14
>>> > To: r-sig-geo
>>> > Subject: [R-sig-Geo] strange issue of memory converting a raster to a
>>> data
>>> > frame
>>> >
>>> > Dear list members,
>>> >
>>> > In converting a raster as the one below to a data frame, I have an
>>> issue of
>>> > memory allocation only when I use a specific pc, and in particular the
>>> one
>>> > with more memory. To be more precise (using same version of R 4.2.2 and
>>> > Terra terra 1.6.47, by means of as.data.frame() function):
>>> >
>>> > with a I5 processor with 8Gb of memory, windows 10 it works
>>> >
>>> > with a I7 processor with 16gb of memory, windows 11 it doesn't
>>> >
>>> > I'm not able to figure out a possible explanation!
>>> > Any suggestions on what to check?
>>> >
>>> >
>>> > SpatRaster
>>> > dimensions  : 5000, 5000, 18  (nrow, ncol, nlyr)
>>> > resolution  : 30, 30  (x, y)
>>> > extent  : -8526.878, 141473.1, 4110588, 4260588  (xmin, xmax, ymin,
>>> > ymax)
>>> > coord. ref. : WGS 84 / UTM zone 45N (EPSG:32645)
>>> > source  : multyMadRes2c.tif
>>> >
>>> >
>>> >
>>> > Sebastiano
>>> >
>>> > *  Sebastiano Trevisani, Ph.D.*
>>> > *Associate Professor*
>>> > *Applied and Environmental Geology*
>>> >
>>> >
>>> > *
>>> >
>>> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
>>> > <
>>> >
>>> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
>>> > >*
>>> > *IUAV University of Venice:
>>> >
>>> https://urldefense.com/v3/__http://www.iuav.it__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9ag_1m0F$
>>> > <
>>> >
>>> https://urldefense.com/v3/__http://www.iuav.it/__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9cV-rY9s$
>>> > >*
>>> >

Re: [R-sig-Geo] strange issue of memory converting a raster to a data frame

[Sebastiano Trevisani]

Thank you Vlad!
This is a good solution, I keep it for future.

My issue is that I would like to understand why things don't work in the
best performing PC.

I'll do more experiments, to isolate the issue.

Sebastiano



Sebastiano



Il lun 23 gen 2023, 18:48 Vlad Amihaesei  ha
scritto:

> You can try converting each layer to data frame instead of all the layers
> at once time. You can do this using a loop.
>
> r <- terra::rast(file.nc)
>
> df<- NULL
>
> for( i in 1:nlyr(r)){
> r1 <-  r[[i]]
> r1.df <- as.data.frame(r1,xy =T)
> df <- rbind(df, r1.df)
> }
>
> Best  regards
>
> Vlad Alexandru AMIHAESEI
>
>
> On Mon, Jan 23, 2023 at 10:33 AM Sebastiano Trevisani 
> wrote:
>
>> Hi  Loïc,
>>
>> thank you for your suggestion! this was one of the possibilities I
>> checked.
>> However, I tried with terra.options() to change the memfrac parameter from
>> 0.6 to 0.1, so as to force the writing on disc, but things didn't work.
>> It seems like it is working as 32 bit system, but the R the installation
>> seems right to 64. Probably I'm missing something very obvious.
>> I will try to build a reproducible example without the need to upload all
>> the file.
>>
>> Thanks again,
>>
>> Sebastiano
>>
>> *  Sebastiano Trevisani, Ph.D.*
>> *Associate Professor*
>> *Applied and Environmental Geology*
>>
>>
>> *  https://orcid.org/-0001-8436-7798
>> *
>> *IUAV University of Venice: www.iuav.it *
>>
>> *Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
>> 1299Mail:strevis...@iuav.it  *
>> *"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
>> * riflettono in alcun modo una posizione ufficiale dello IUAV "*
>> *"The views expressed are purely those of the writer and may not in
>> any circumstances be regarded as stating an official position of the
>> IUAV."*
>>
>>
>> On Mon, Jan 23, 2023 at 5:36 PM DUTRIEUX Loic > >
>> wrote:
>>
>> > Hi Sebastiano,
>> >
>> > Try comparing terra::terraOptions() and terra::mem_info(r) on both
>> > systems. Just guessing there but it could be that terra is trying to do
>> > everything in memory and failing on your 16GB system, while taking a
>> memory
>> > friendly route on your 8GB system.
>> >
>> > Cheers,
>> > Loïc
>> > 
>> > From: R-sig-Geo  on behalf of
>> Sebastiano
>> > Trevisani 
>> > Sent: 23 January 2023 12:30:14
>> > To: r-sig-geo
>> > Subject: [R-sig-Geo] strange issue of memory converting a raster to a
>> data
>> > frame
>> >
>> > Dear list members,
>> >
>> > In converting a raster as the one below to a data frame, I have an
>> issue of
>> > memory allocation only when I use a specific pc, and in particular the
>> one
>> > with more memory. To be more precise (using same version of R 4.2.2 and
>> > Terra terra 1.6.47, by means of as.data.frame() function):
>> >
>> > with a I5 processor with 8Gb of memory, windows 10 it works
>> >
>> > with a I7 processor with 16gb of memory, windows 11 it doesn't
>> >
>> > I'm not able to figure out a possible explanation!
>> > Any suggestions on what to check?
>> >
>> >
>> > SpatRaster
>> > dimensions  : 5000, 5000, 18  (nrow, ncol, nlyr)
>> > resolution  : 30, 30  (x, y)
>> > extent  : -8526.878, 141473.1, 4110588, 4260588  (xmin, xmax, ymin,
>> > ymax)
>> > coord. ref. : WGS 84 / UTM zone 45N (EPSG:32645)
>> > source  : multyMadRes2c.tif
>> >
>> >
>> >
>> > Sebastiano
>> >
>> > *  Sebastiano Trevisani, Ph.D.*
>> > *Associate Professor*
>> > *Applied and Environmental Geology*
>> >
>> >
>> > *
>> >
>> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
>> > <
>> >
>> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
>> > >*
>> > *IUAV University of Venice:
>> >
>> https://urldefense.com/v3/__http://www.iuav.it__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9ag_1m0F$
>> > <
>> >
>> https://urldefense.com/v3/__http://www.iuav.it/__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9cV-rY9s$
>> > >*
>> >
>> > *Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
>> > 1299Mail:strevis...@iuav.it  *
>> > *"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
>> > * riflettono in alcun modo una posizione ufficiale dello IUAV "*
>> > *"The views expressed are purely those of the writer and may not in
>> > any circumstances be regarded as stating an official position of the
>> > IUAV."*
>> >
>> > [[alternative HTML version deleted]]
>> >
>> > ___
>> > R-sig-Geo mailing list
>> > R-sig-Geo@r-project.org
>> >
>> >
>> 

Re: [R-sig-Geo] strange issue of memory converting a raster to a data frame

[Vlad Amihaesei]

You can try converting each layer to data frame instead of all the layers
at once time. You can do this using a loop.

r <- terra::rast(file.nc)

df<- NULL

for( i in 1:nlyr(r)){
r1 <-  r[[i]]
r1.df <- as.data.frame(r1,xy =T)
df <- rbind(df, r1.df)
}

Best  regards

Vlad Alexandru AMIHAESEI


On Mon, Jan 23, 2023 at 10:33 AM Sebastiano Trevisani 
wrote:

> Hi  Loïc,
>
> thank you for your suggestion! this was one of the possibilities I checked.
> However, I tried with terra.options() to change the memfrac parameter from
> 0.6 to 0.1, so as to force the writing on disc, but things didn't work.
> It seems like it is working as 32 bit system, but the R the installation
> seems right to 64. Probably I'm missing something very obvious.
> I will try to build a reproducible example without the need to upload all
> the file.
>
> Thanks again,
>
> Sebastiano
>
> *  Sebastiano Trevisani, Ph.D.*
> *Associate Professor*
> *Applied and Environmental Geology*
>
>
> *  https://orcid.org/-0001-8436-7798
> *
> *IUAV University of Venice: www.iuav.it *
>
> *Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
> 1299Mail:strevis...@iuav.it  *
> *"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
> * riflettono in alcun modo una posizione ufficiale dello IUAV "*
> *"The views expressed are purely those of the writer and may not in
> any circumstances be regarded as stating an official position of the
> IUAV."*
>
>
> On Mon, Jan 23, 2023 at 5:36 PM DUTRIEUX Loic 
> wrote:
>
> > Hi Sebastiano,
> >
> > Try comparing terra::terraOptions() and terra::mem_info(r) on both
> > systems. Just guessing there but it could be that terra is trying to do
> > everything in memory and failing on your 16GB system, while taking a
> memory
> > friendly route on your 8GB system.
> >
> > Cheers,
> > Loïc
> > 
> > From: R-sig-Geo  on behalf of
> Sebastiano
> > Trevisani 
> > Sent: 23 January 2023 12:30:14
> > To: r-sig-geo
> > Subject: [R-sig-Geo] strange issue of memory converting a raster to a
> data
> > frame
> >
> > Dear list members,
> >
> > In converting a raster as the one below to a data frame, I have an issue
> of
> > memory allocation only when I use a specific pc, and in particular the
> one
> > with more memory. To be more precise (using same version of R 4.2.2 and
> > Terra terra 1.6.47, by means of as.data.frame() function):
> >
> > with a I5 processor with 8Gb of memory, windows 10 it works
> >
> > with a I7 processor with 16gb of memory, windows 11 it doesn't
> >
> > I'm not able to figure out a possible explanation!
> > Any suggestions on what to check?
> >
> >
> > SpatRaster
> > dimensions  : 5000, 5000, 18  (nrow, ncol, nlyr)
> > resolution  : 30, 30  (x, y)
> > extent  : -8526.878, 141473.1, 4110588, 4260588  (xmin, xmax, ymin,
> > ymax)
> > coord. ref. : WGS 84 / UTM zone 45N (EPSG:32645)
> > source  : multyMadRes2c.tif
> >
> >
> >
> > Sebastiano
> >
> > *  Sebastiano Trevisani, Ph.D.*
> > *Associate Professor*
> > *Applied and Environmental Geology*
> >
> >
> > *
> >
> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
> > <
> >
> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
> > >*
> > *IUAV University of Venice:
> >
> https://urldefense.com/v3/__http://www.iuav.it__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9ag_1m0F$
> > <
> >
> https://urldefense.com/v3/__http://www.iuav.it/__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9cV-rY9s$
> > >*
> >
> > *Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
> > 1299Mail:strevis...@iuav.it  *
> > *"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
> > * riflettono in alcun modo una posizione ufficiale dello IUAV "*
> > *"The views expressed are purely those of the writer and may not in
> > any circumstances be regarded as stating an official position of the
> > IUAV."*
> >
> > [[alternative HTML version deleted]]
> >
> > ___
> > R-sig-Geo mailing list
> > R-sig-Geo@r-project.org
> >
> >
> https://urldefense.com/v3/__https://stat.ethz.ch/mailman/listinfo/r-sig-geo__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9ScsuXEI$
> >
>
> [[alternative HTML version deleted]]
>
> ___
> R-sig-Geo mailing list
> R-sig-Geo@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>

[[alternative HTML version deleted]]

___

Re: [R-sig-Geo] strange issue of memory converting a raster to a data frame

[Sebastiano Trevisani]

Hi  Loïc,

thank you for your suggestion! this was one of the possibilities I checked.
However, I tried with terra.options() to change the memfrac parameter from
0.6 to 0.1, so as to force the writing on disc, but things didn't work.
It seems like it is working as 32 bit system, but the R the installation
seems right to 64. Probably I'm missing something very obvious.
I will try to build a reproducible example without the need to upload all
the file.

Thanks again,

Sebastiano

*  Sebastiano Trevisani, Ph.D.*
*Associate Professor*
*Applied and Environmental Geology*


*  https://orcid.org/-0001-8436-7798
*
*IUAV University of Venice: www.iuav.it *

*Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
1299Mail:strevis...@iuav.it  *
*"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
* riflettono in alcun modo una posizione ufficiale dello IUAV "*
*"The views expressed are purely those of the writer and may not in
any circumstances be regarded as stating an official position of the IUAV."*


On Mon, Jan 23, 2023 at 5:36 PM DUTRIEUX Loic 
wrote:

> Hi Sebastiano,
>
> Try comparing terra::terraOptions() and terra::mem_info(r) on both
> systems. Just guessing there but it could be that terra is trying to do
> everything in memory and failing on your 16GB system, while taking a memory
> friendly route on your 8GB system.
>
> Cheers,
> Loïc
> 
> From: R-sig-Geo  on behalf of Sebastiano
> Trevisani 
> Sent: 23 January 2023 12:30:14
> To: r-sig-geo
> Subject: [R-sig-Geo] strange issue of memory converting a raster to a data
> frame
>
> Dear list members,
>
> In converting a raster as the one below to a data frame, I have an issue of
> memory allocation only when I use a specific pc, and in particular the one
> with more memory. To be more precise (using same version of R 4.2.2 and
> Terra terra 1.6.47, by means of as.data.frame() function):
>
> with a I5 processor with 8Gb of memory, windows 10 it works
>
> with a I7 processor with 16gb of memory, windows 11 it doesn't
>
> I'm not able to figure out a possible explanation!
> Any suggestions on what to check?
>
>
> SpatRaster
> dimensions  : 5000, 5000, 18  (nrow, ncol, nlyr)
> resolution  : 30, 30  (x, y)
> extent  : -8526.878, 141473.1, 4110588, 4260588  (xmin, xmax, ymin,
> ymax)
> coord. ref. : WGS 84 / UTM zone 45N (EPSG:32645)
> source  : multyMadRes2c.tif
>
>
>
> Sebastiano
>
> *  Sebastiano Trevisani, Ph.D.*
> *Associate Professor*
> *Applied and Environmental Geology*
>
>
> *
> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
> <
> https://urldefense.com/v3/__https://orcid.org/-0001-8436-7798__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9YxpzJmj$
> >*
> *IUAV University of Venice:
> https://urldefense.com/v3/__http://www.iuav.it__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9ag_1m0F$
> <
> https://urldefense.com/v3/__http://www.iuav.it/__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9cV-rY9s$
> >*
>
> *Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
> 1299Mail:strevis...@iuav.it  *
> *"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
> * riflettono in alcun modo una posizione ufficiale dello IUAV "*
> *"The views expressed are purely those of the writer and may not in
> any circumstances be regarded as stating an official position of the
> IUAV."*
>
> [[alternative HTML version deleted]]
>
> ___
> R-sig-Geo mailing list
> R-sig-Geo@r-project.org
>
> https://urldefense.com/v3/__https://stat.ethz.ch/mailman/listinfo/r-sig-geo__;!!DOxrgLBm!H86VAGwO3fNqAu4LS2hmv13aheZ9hGMiMmD7ZTN2sVxV-iuyV04Q_dV_lK5KNQauD3mFclNlC8a2LSlyZehq9ScsuXEI$
>

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Re: [R-sig-Geo] strange issue of memory converting a raster to a data frame

[DUTRIEUX Loic via R-sig-Geo]

Hi Sebastiano,

Try comparing terra::terraOptions() and terra::mem_info(r) on both systems. 
Just guessing there but it could be that terra is trying to do everything in 
memory and failing on your 16GB system, while taking a memory friendly route on 
your 8GB system.

Cheers,
Loïc

From: R-sig-Geo  on behalf of Sebastiano 
Trevisani 
Sent: 23 January 2023 12:30:14
To: r-sig-geo
Subject: [R-sig-Geo] strange issue of memory converting a raster to a data frame

Dear list members,

In converting a raster as the one below to a data frame, I have an issue of
memory allocation only when I use a specific pc, and in particular the one
with more memory. To be more precise (using same version of R 4.2.2 and
Terra terra 1.6.47, by means of as.data.frame() function):

with a I5 processor with 8Gb of memory, windows 10 it works

with a I7 processor with 16gb of memory, windows 11 it doesn't

I'm not able to figure out a possible explanation!
Any suggestions on what to check?


SpatRaster
dimensions  : 5000, 5000, 18  (nrow, ncol, nlyr)
resolution  : 30, 30  (x, y)
extent  : -8526.878, 141473.1, 4110588, 4260588  (xmin, xmax, ymin,
ymax)
coord. ref. : WGS 84 / UTM zone 45N (EPSG:32645)
source  : multyMadRes2c.tif



Sebastiano

*  Sebastiano Trevisani, Ph.D.*
*Associate Professor*
*Applied and Environmental Geology*


*  
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[R-sig-Geo] strange issue of memory converting a raster to a data frame

[Sebastiano Trevisani]

Dear list members,

In converting a raster as the one below to a data frame, I have an issue of
memory allocation only when I use a specific pc, and in particular the one
with more memory. To be more precise (using same version of R 4.2.2 and
Terra terra 1.6.47, by means of as.data.frame() function):

with a I5 processor with 8Gb of memory, windows 10 it works

with a I7 processor with 16gb of memory, windows 11 it doesn't

I'm not able to figure out a possible explanation!
Any suggestions on what to check?


SpatRaster
dimensions  : 5000, 5000, 18  (nrow, ncol, nlyr)
resolution  : 30, 30  (x, y)
extent  : -8526.878, 141473.1, 4110588, 4260588  (xmin, xmax, ymin,
ymax)
coord. ref. : WGS 84 / UTM zone 45N (EPSG:32645)
source  : multyMadRes2c.tif



Sebastiano

*  Sebastiano Trevisani, Ph.D.*
*Associate Professor*
*Applied and Environmental Geology*


*  https://orcid.org/-0001-8436-7798
*
*IUAV University of Venice: www.iuav.it *

*Address: Dorsoduro 2206,  Venice 30123, Italy Tel:+39. 041. 257
1299Mail:strevis...@iuav.it  *
*"Le opinioni espresse sono riferibili esclusivamente all'autore e non *
* riflettono in alcun modo una posizione ufficiale dello IUAV "*
*"The views expressed are purely those of the writer and may not in
any circumstances be regarded as stating an official position of the IUAV."*

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