QI Variable Comparison

report produced with glance, version 0.2.6.10
comparison generated Tue Sep 29 19:18:19 2009 by user wstraka on craackly.ssec.wisc.edu

file A:

path: /data/wstraka/temp/NC4_NC3_TEST//NC3/MSG8_SEVIRI_2006236_1600_00_AWG_WINDS_AMV.nc
md5sum for file A: 8d77c43cd45738780486ad8ac36de437
last modified: Tue Sep 29 15:58:33 2009

file B:

path: /data/wstraka/temp/NC4_NC3_TEST//NC4/MSG8_SEVIRI_2006236_1600_00_AWG_WINDS_AMV.nc
md5sum for file B: 1a390d349d97b3bf1c8bec75627ba824
last modified: Tue Sep 29 15:45:05 2009

latitude: Latitude
longitude: Longitude

WARNING: 55748 data points (82.37% of all data) show possible mismatch in values stored in file a and file b longitude and latitude values. Depending on the degree of mismatch, some data value comparisons in this report may be distorted or spatially nonsensical. Please consider re-running this report and including an examination of your longitude and latitude variables with appropriate epsilons in order to analyze the significance of the difference.
View mismatching points in A's lon/lat system
View mismatching points in B's lon/lat system

Original Data

Comparison Information

variable name: QI
epsilon value: 0.1
"missing" data value in A: -98
"missing" data value in B: -98

Statistical Summary

Finite Data Statistics
a_finite_count*: 17371
a_finite_fraction*: 0.2567
b_finite_count*: 17367
b_finite_fraction*: 0.2566
common_finite_count*: 11406
common_finite_fraction*: 0.1685
finite_in_only_one_count*: 11926
finite_in_only_one_fraction*: 0.1762

General Statistics
a_missing_value*: -98
b_missing_value*: -98
epsilon*: 0.1
max_a*: 100
max_b*: 100
min_a*: 0
min_b*: 0
num_data_points*: 67681
shape*: (67681,)
spatially_invalid_pts_ignored_in_a*: 0
spatially_invalid_pts_ignored_in_b*: 0
trouble_points_count*: 19157
trouble_points_fraction*: 0.283

Missing Value Statistics
a_missing_count*: 50310
a_missing_fraction*: 0.7433
b_missing_count*: 50314
b_missing_fraction*: 0.7434
common_missing_count*: 44349
common_missing_fraction*: 0.6553

NaN Statistics
a_nan_count*: 0
a_nan_fraction*: 0
b_nan_count*: 0
b_nan_fraction*: 0
common_nan_count*: 0
common_nan_fraction*: 0

Numerical Comparison Statistics
correlation*: 0.5125
diff_outside_epsilon_count*: 7231
diff_outside_epsilon_fraction*: 0.634
max_diff*: 97
mean_diff*: 9.29
median_diff*: 3
perfect_match_count*: 4175
perfect_match_fraction*: 0.366
rms_diff*: 17.32
std_diff*: 14.65