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fix linear with mismatched vectors 

we had:

	$ vips linear sarto_ng.v x.v "1 2 3" "4"
	$ vipsheader x.v
	x.v: 1865x2556 float, 1 band, b-w
	$ vips linear sarto_ng.v x.v "1" "4 5 6"
	$ vipsheader x.v
	x.v: 1865x2556 float, 3 bands, b-w

there was a typo in linear.c
This commit is contained in:
John Cupitt 2014-09-15 12:41:05 +01:00
parent 12d623fa25
commit 133e2f94e9
2 changed files with 17 additions and 2 deletions
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6
libvips/arithmetic/linear.c
View File

@ -132,14 +132,16 @@ vips_linear_build( VipsObject *object )
*/
linear->n = 1;
if( linear->a )
linear->n = VIPS_MAX( linear->n, linear->b->n );
linear->n = VIPS_MAX( linear->n, linear->a->n );
if( linear->b )
linear->n = VIPS_MAX( linear->n, linear->b->n );
if( unary->in )
linear->n = VIPS_MAX( linear->n, bands );
arithmetic->base_bands = linear->n;
if( unary->in && linear->a && linear->b ) {
if( unary->in &&
linear->a &&
linear->b ) {
if( vips_check_vector( class->nickname,
linear->a->n, unary->in ) ||
vips_check_vector( class->nickname,

13
python/test_arithmetic.py
View File

@ -315,5 +315,18 @@ class TestArithmetic(unittest.TestCase):
self.assertAlmostEqualObjects(hist.getpoint(100,0), [5000])
self.assertAlmostEqualObjects(hist.getpoint(12,0), [0])
test = test * [1, 2, 3]
for fmt in all_formats:
hist = test.cast(fmt).hist_find(band = 0)
self.assertAlmostEqualObjects(hist.getpoint(0,0), [5000])
self.assertAlmostEqualObjects(hist.getpoint(100,0), [5000])
self.assertAlmostEqualObjects(hist.getpoint(12,0), [0])
hist = test.cast(fmt).hist_find(band = 1)
self.assertAlmostEqualObjects(hist.getpoint(0,0), [5000])
self.assertAlmostEqualObjects(hist.getpoint(200,0), [5000])
self.assertAlmostEqualObjects(hist.getpoint(12,0), [0])
if __name__ == '__main__':
unittest.main()