Function
Vipsswitch
Declaration [src]
int
vips_switch (
VipsImage** tests,
VipsImage** out,
int n,
...
)
Description [src]
The tests
images are evaluated and at each point the index of the first
non-zero value is written to out
. If all tests
are false, the value
(n
+ 1) is written.
Images in tests
must have one band. They are expanded to the
bounding box of the set of images in tests
, and that size is used for
out
. tests
can have up to 255 elements.
Combine with vips_case()
to make an efficient multi-way vips_ifthenelse().
See also: vips_maplut(), vips_case(), vips_ifthenelse().
This function is not directly available to language bindings |
Parameters
tests |
An array of VipsImage* |
Test these images. |
|
The length of the array is specified in the n argument. | |
The data is owned by the caller of the function. | |
out |
VipsImage |
Output index image. |
|
The argument will be set by the function. | |
The called function takes ownership of the data, and is responsible for freeing it. | |
n |
int |
Number of input images. |
|
... |
|
|