Longitude Variable Comparison

report produced with glance, version 0.2.6.24
comparison generated Mon Jan 31 18:27:54 2011 by user wstraka on craackly.ssec.wisc.edu

file A:

path: /data/wstraka/FWAIT_nav/gq_nav/truth.hdf
md5sum for file A: 8b8672fc258acbc20a8818223b7c5dd5
last modified: Mon Jan 31 17:35:41 2011

file B:

path: /data/wstraka/FWAIT_nav/wei_gao/meteosat9.fd_v2_static.hdf
md5sum for file B: ebd015bd2a88526611620344a695e5de
last modified: Mon Jan 31 17:33:48 2011

A configuration file was used to control the production report.
Please see this copy of the configuration file for details.

Note: The data for this variable from file A was filtered.
Note: The data for this variable from file B was filtered.
Note: The longitude in file A was filtered.
Note: The longitude in file B was filtered.
Please see the original configuration file to view any data filtering functions.

latitude in A: pixel_latitude
latitude in B: Latitude
longitude in A: pixel_longitude
longitude in B: Longitude
longitude/latitude comparison epsilon: 2e-07

WARNING: 10142086 data points (73.61% 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 in A: pixel_longitude
variable name in B: Longitude
epsilon value: 2e-07
"missing" data value: -999.0
units in B: degree

Statistical Summary

Finite Data Statistics
a_finite_count*: 10280821
a_finite_fraction*: 0.7461
b_finite_count*: 10280813
b_finite_fraction*: 0.7461
common_finite_count*: 10280809
common_finite_fraction*: 0.7461
finite_in_only_one_count*: 0
finite_in_only_one_fraction*: 0

General Statistics
a_missing_value*: -999
b_missing_value*: -999
epsilon*: 2e-07
epsilon_percent*: None
max_a*: 81.2
max_b*: 81.18
min_a*: -81.2
min_b*: -81.18
num_data_points*: 13778944
shape*: (3712, 3712)
spatially_invalid_pts_ignored_in_a*: 3498123
spatially_invalid_pts_ignored_in_b*: 3498131

Missing Value Statistics
a_missing_count*: 0
a_missing_fraction*: 0
b_missing_count*: 0
b_missing_fraction*: 0
common_missing_count*: 0
common_missing_fraction*: 0

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*: 1
diff_outside_epsilon_count*: 9945880
diff_outside_epsilon_fraction*: 0.9674
max_diff*: 0.0975
mean_diff*: 5.542e-05
median_diff*: 1.907e-05
perfect_match_count*: 240453
perfect_match_fraction*: 0.02339
r-squared correlation*: 1
rms_diff*: 0.0002617
std_diff*: 0.0002542
trouble_points_count*: 9945880
trouble_points_fraction*: 0.7218