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Commits
df6b8a59
Commit
df6b8a59
authored
Nov 05, 2013
by
Laurent Belcour
Browse files
Adding the matlab interpolator. Need to check for duplicates
parent
2f7c8b0a
Changes
4
Hide whitespace changes
Inline
Side-by-side
sources/plugins/data_interpolant_matlab/data.cpp
0 → 100644
View file @
df6b8a59
#include "data.h"
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <cassert>
#include <core/vertical_segment.h>
mxArray
*
X
,
*
Y
,
*
x
,
*
y
;
#define BUFFER_SIZE 10000
char
*
output
=
new
char
[
BUFFER_SIZE
+
1
];
data_interpolant
::
data_interpolant
()
{
_data
=
new
vertical_segment
();
// Create matlab engine
#ifdef WIN32
if
(
!
(
ep
=
engOpen
(
NULL
)))
#else
if
(
!
(
ep
=
engOpen
(
"matlab -nosplash"
)))
#endif
{
std
::
cerr
<<
"<ERROR>> can't start MATLAB engine"
<<
std
::
endl
;
}
}
data_interpolant
::~
data_interpolant
()
{
delete
_data
;
mxDestroyArray
(
x
);
mxDestroyArray
(
y
);
mxDestroyArray
(
X
);
mxDestroyArray
(
Y
);
engClose
(
ep
);
}
// Load data from a file
void
data_interpolant
::
load
(
const
std
::
string
&
filename
)
{
// Load the data
_data
->
load
(
filename
);
// Copy the informations
setDimX
(
_data
->
dimX
());
setDimY
(
_data
->
dimY
());
setMin
(
_data
->
min
());
setMax
(
_data
->
max
());
Eigen
::
MatrixXd
eX
(
_data
->
size
(),
dimX
()
*
dimY
());
Eigen
::
MatrixXd
eY
(
_data
->
size
(),
dimY
());
for
(
int
i
=
0
;
i
<
_data
->
size
();
++
i
)
{
vec
x
=
_data
->
get
(
i
);
for
(
int
k
=
0
;
k
<
dimY
();
++
k
)
{
for
(
int
j
=
0
;
j
<
dimX
();
++
j
)
{
eX
(
i
,
j
+
k
*
dimX
())
=
x
[
j
];
}
eY
(
i
,
k
)
=
x
[
dimX
()
+
k
];
}
}
// Create matrices
X
=
mxCreateDoubleMatrix
(
_data
->
size
(),
dimX
()
*
dimY
(),
mxREAL
);
memcpy
((
void
*
)
mxGetPr
(
X
),
(
void
*
)
eX
.
data
(),
_data
->
size
()
*
dimY
()
*
dimX
()
*
sizeof
(
double
));
engPutVariable
(
ep
,
"X"
,
X
);
Y
=
mxCreateDoubleMatrix
(
_data
->
size
(),
dimY
(),
mxREAL
);
memcpy
((
void
*
)
mxGetPr
(
Y
),
(
void
*
)
eY
.
data
(),
_data
->
size
()
*
dimY
()
*
sizeof
(
double
));
engPutVariable
(
ep
,
"Y"
,
Y
);
output
[
BUFFER_SIZE
]
=
'\0'
;
engOutputBuffer
(
ep
,
output
,
BUFFER_SIZE
)
;
engEvalString
(
ep
,
"display(X)"
);
std
::
cout
<<
output
<<
std
::
endl
;
engEvalString
(
ep
,
"display(Y)"
);
std
::
cout
<<
output
<<
std
::
endl
;
x
=
mxCreateDoubleMatrix
(
1
,
dimX
(),
mxREAL
);
engPutVariable
(
ep
,
"x"
,
x
);
}
void
data_interpolant
::
load
(
const
std
::
string
&
filename
,
const
arguments
&
)
{
load
(
filename
);
}
void
data_interpolant
::
save
(
const
std
::
string
&
filename
)
const
{
}
// Acces to data
vec
data_interpolant
::
get
(
int
id
)
const
{
vec
res
(
dimX
()
+
dimY
())
;
return
res
;
}
vec
data_interpolant
::
operator
[](
int
i
)
const
{
return
get
(
i
)
;
}
//! \todo Test this function
void
data_interpolant
::
set
(
vec
x
)
{
assert
(
x
.
size
()
==
dimX
());
}
vec
data_interpolant
::
value
(
vec
,
vec
)
const
{
vec
res
(
dimY
());
std
::
cerr
<<
"<<ERROR>> Deprecated function: "
<<
__func__
<<
std
::
endl
;
return
res
;
}
vec
data_interpolant
::
value
(
vec
ax
)
const
{
vec
res
=
vec
::
Zero
(
dimY
());
// Copy the input vector to matlab code
memcpy
((
void
*
)
mxGetPr
(
x
),
(
void
*
)
&
ax
[
0
],
dimX
()
*
sizeof
(
double
));
// Evaluate the matlab routine
std
::
stringstream
cmd
;
cmd
<<
"y = griddatan(X(:, 1:"
<<
dimX
()
<<
"), Y(:, 1), x)"
;
engEvalString
(
ep
,
cmd
.
str
().
c_str
());
std
::
cout
<<
output
<<
std
::
endl
;
engEvalString
(
ep
,
"display(y)"
);
std
::
cout
<<
output
<<
std
::
endl
;
// Get results and copy it
y
=
engGetVariable
(
ep
,
"y"
)
;
double
*
y_val
=
(
double
*
)
mxGetData
(
y
);
memcpy
(
&
res
[
0
],
y_val
,
dimY
()
*
sizeof
(
double
));
return
res
;
}
// Get data size, e.g. the number of samples to fit
int
data_interpolant
::
size
()
const
{
assert
(
_data
!=
NULL
);
return
_data
->
size
();
}
ALTA_DLL_EXPORT
data
*
provide_data
()
{
return
new
data_interpolant
();
}
sources/plugins/data_interpolant_matlab/data.h
0 → 100644
View file @
df6b8a59
#pragma once
#include <core/data.h>
#include <core/common.h>
#include <core/args.h>
#include <engine.h>
/*! \brief Load a data file, but provide access to an interpolated version of
* the data points.
*
* <h2>Requirements:</h2>
* Matlab engine
*/
class
data_interpolant
:
public
data
{
public:
// methods
data_interpolant
();
~
data_interpolant
();
// Load data from a file
virtual
void
load
(
const
std
::
string
&
filename
)
;
virtual
void
load
(
const
std
::
string
&
filename
,
const
arguments
&
args
)
;
virtual
void
save
(
const
std
::
string
&
filename
)
const
;
// Acces to data
virtual
vec
get
(
int
i
)
const
;
virtual
vec
operator
[](
int
i
)
const
;
virtual
vec
value
(
vec
in
,
vec
out
)
const
;
virtual
vec
value
(
vec
x
)
const
;
// Set data
virtual
void
set
(
vec
x
);
// Get data size, e.g. the number of samples to fit
virtual
int
size
()
const
;
private:
// data
// The data object used to load sparse points sets
data
*
_data
;
Engine
*
ep
;
}
;
sources/plugins/data_interpolant_matlab/data_interpolant_matlab.pro
0 → 100644
View file @
df6b8a59
TEMPLATE
=
lib
CONFIG
*=
plugin
\
eigen
\
matlab
DESTDIR
=
..
/../
build
INCLUDEPATH
+=
..
/..
HEADERS
=
data
.
h
SOURCES
=
data
.
cpp
LIBS
+=
-
L
..
/../
build
\
-
lcore
sources/plugins/plugins.pro
View file @
df6b8a59
...
...
@@ -29,5 +29,6 @@ SUBDIRS = \
data_merl
\
data_brdf_slice
\
data_interpolant
\
data_interpolant_matlab
\
#
data_astm
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