Hi,
I'm trying to index a simple uint32 column and search if a value is
there. Although during the in-kernel query i get an error like this:
Traceback (most recent call last):
File "G:\_2\PytablesTestCode\pytableindex.py", line 9, in <module>
r = [ row.nrow for row in it ]
File "tableExtension.pyx", line 858, in
tables.tableExtension.Row.__next__ (tables\tableExtension.c:7788)
File "tableExtension.pyx", line 879, in
tables.tableExtension.Row.__next__indexed
(tables\tableExtension.c:7922)
AssertionError
The second time I perform the same query I get no errors but also I
got no results...
I get this on python 2.7, pytables 2.4.0 and 2.3.1 under windows 64 (7
and 8). I'm using pytables distro from
<http://www.lfd.uci.edu/~gohlke/pythonlibs/#pytables>
I'm sure I've had code like this running just fine on older pytables
2.2.X (with pro) and older python...
<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Here's table creation code:
import tables
import numpy as np
import random
#initalizes column types
class Columns(tables.IsDescription):
imageid = tables.UInt32Col(pos=1)
feature = tables.Float64Col(pos=2, shape=(30,))
#creates Table
h5file=tables.openFile('features.h5','a', title='features')
table = h5file.createTable('/', 'values', Columns, expectedrows=1000000000)
table.flush()
Columns = table.row
#appends values to table
for i in xrange(100):
Columns['imageid'] = i
Columns['feature'] = [np.random.random_sample((30,))]
Columns.append()
table.flush()
table.cols.imageid.createCSIndex()
h5file.close()
<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Here's table query code:
import time
import tables
#opens tables
h5file=tables.openFile('features.h5','a')
table=h5file.root.values
it = table.where('imageid == 8')
r = [ row.nrow for row in it ]
print r
-----
Thank you,
Dmitry
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