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From: anila alex on 1 Mar 2010 07:00
I have a latitude x longitude matrix with data points at 0 ,1, 2, 3, 4....etc along Y direction(ie latitude ) and 0,1.25,2.5,3.75.....along X direction (longitude) and i need a matrix with data at points 0, 2.5, 5...etc both in X and Y direction.
when tried interp2 with X=0:1:40
and Y=0:1.25:44.25
and Z=data i have(41x35 matrix)
it came that X and Y must have same size as Z
Please Help.
Thanks for your time
Anila
From: Matt J on 1 Mar 2010 07:13
"anila alex" <anila.atmos(a)gmail.com> wrote in message <hmga8m$1rl$1(a)fred.mathworks.com>...
> I have a latitude x longitude matrix with data points at 0 ,1, 2, 3, 4....etc along Y direction(ie latitude ) and 0,1.25,2.5,3.75.....along X direction (longitude) and i need a matrix with data at points 0, 2.5, 5...etc both in X and Y direction.
> when tried interp2 with X=0:1:40
> and Y=0:1.25:44.25
> and Z=data i have(41x35 matrix)
> it came that X and Y must have same size as Z
==============

I'll ask the obvious question. Why do you have X and Y which do not agree in size with Z?
From: us on 1 Mar 2010 07:14
"anila alex" <anila.atmos(a)gmail.com> wrote in message <hmga8m$1rl$1(a)fred.mathworks.com>...
> I have a latitude x longitude matrix with data points at 0 ,1, 2, 3, 4....etc along Y direction(ie latitude ) and 0,1.25,2.5,3.75.....along X direction (longitude) and i need a matrix with data at points 0, 2.5, 5...etc both in X and Y direction.
> when tried interp2 with X=0:1:40
> and Y=0:1.25:44.25
> and Z=data i have(41x35 matrix)
> it came that X and Y must have same size as Z
> Please Help.
> Thanks for your time
> Anila

well... what a surprise...
show CSSM the syntax of your call to INTERP2...

us
From: anila alex on 2 Mar 2010 23:20
"us " <us(a)neurol.unizh.ch> wrote in message <hmgb2d$k9l$1(a)fred.mathworks.com>...
> "anila alex" <anila.atmos(a)gmail.com> wrote in message <hmga8m$1rl$1(a)fred.mathworks.com>...
> > I have a latitude x longitude matrix with data points at 0 ,1, 2, 3, 4....etc along Y direction(ie latitude ) and 0,1.25,2.5,3.75.....along X direction (longitude) and i need a matrix with data at points 0, 2.5, 5...etc both in X and Y direction.
> > when tried interp2 with X=0:1:40
> > and Y=0:1.25:44.25
> > and Z=data i have(41x35 matrix)
> > it came that X and Y must have same size as Z
> > Please Help.
> > Thanks for your time
> > Anila
>
> well... what a surprise...
> show CSSM the syntax of your call to INTERP2...
>
> us
This is the syntax
a=meshgrid(0:40);
b=meshgrid(58.75:1.25:101.25);
c=load(fgy);
ai=0:2.5:40;
bi=60:2.5:100;
ci=interp2(a,b,c,ai,bi);
Thanks
Anila
From: anila alex on 2 Mar 2010 23:29
"Matt J " <mattjacREMOVE(a)THISieee.spam> wrote in message <hmgb0h$grf$1(a)fred.mathworks.com>...
> "anila alex" <anila.atmos(a)gmail.com> wrote in message <hmga8m$1rl$1(a)fred.mathworks.com>...
> > I have a latitude x longitude matrix with data points at 0 ,1, 2, 3, 4....etc along Y direction(ie latitude ) and 0,1.25,2.5,3.75.....along X direction (longitude) and i need a matrix with data at points 0, 2.5, 5...etc both in X and Y direction.
> > when tried interp2 with X=0:1:40
> > and Y=0:1.25:44.25
> > and Z=data i have(41x35 matrix)
> > it came that X and Y must have same size as Z
> ==============
>
> I'll ask the obvious question. Why do you have X and Y which do not agree in size with Z?
because the matrix has 41 rows and 35 columns

so i took x=meshgrid(0:1:40)
and y=(0:1.25:44.25)

Anila
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