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dap4.ce in Sequences: adding a filter-by-value yields bogus data #363
Description
Given a sequence, I can request a constrained sequence by column name, but when I add a filter by value the data is off by a lot.
Minimal example
Consider this (flat) sequence: gsodock.dat. To make it easier say I only want to request the columns Time and Depth (Time is monotonically increasing). To make it even easier, say I want the first 2 values of Time, or values of Time<35234.01. Thus, I want a 2x2 table (two columns, two rows). Click here to look at the complete ascii data on the browser, to corroborate that I only want the first 2 rows based on the value of the first column.
The URL with the constraint expression is:
url = "http://test.opendap.org/opendap/hyrax/data/ff/gsodock.dat.dap?dap4.ce=/URI_GSO-Dock{Time;Depth}|Time<35234.01"or encoded:
http://test.opendap.org/opendap/hyrax/data/ff/gsodock.dat.dap?dap4.ce=/URI_GSO-Dock%7BTime%3BDepth%7D%7CTime%3C35234.01What do I get?
I get a correctly constrained DMR, but the serialized data has ~ 40 rows, way more than the expected 2.
The following is the CSV of the response (adding .csv to the url before the ? parameter)
Dataset: gsodock.dat
/URI_GSO-Dock.Time, /URI_GSO-Dock.Depth
35234.0078, 1.95
4.80000020565093, 21
2.00000048917718, 337.5
-6.55360316485167, 7.03763
0.110000029411098, 18.08
2048.00052068226, 1.86136e-19
1228.80005258942, 20.3
2.00000048892107, 270
8.27887769825157e-153, 7.03763
0.0287500061606816, 18.05
32768.0083309472, nan
19.2000008217692, 19.9
0.00781250191021172, 315
0.155000001601737, 18.47
5.30498947741318e-315, 765.3
8.0000019367151, 19.3
32768.0080070496, 45
-6.5536013081437, 7.03763
2.87999964415807, 17.91
25.6000099773631, 21
8.27887778389724e-153, 7.03763
2.32000017821569, 18.11
1.2000000513969, 22.5
0.0799999984166828, 19.44
14.4000034630485, 21.8
2048.0005010128, 45
-6.55360131582711, 7.03764
0.053750015897642, 19.74
0.125000030268362, 20.3
512.000125163794, 67.5
8.27887773548278e-153, 7.03764
0.48000007949742, 19.84
2048.00052070878, nan
2.79999972135341, 18.7
512.000125068426, 90
3.76000071227331, 19.69
0.00781250198635348, -2.4096
0.225000054106524, 17.7
0.00781250190784704, 67.5
-6.55360127240419, 7.03764
1.17497569842504e-310, 19.29What did I expect to get?
Dataset: gsodock.dat
/URI_GSO-Dock.Time, /URI_GSO-Dock.Depth
35234, 1.95
35234.0078, 1.89NOTE: From all the tests I have done, the first row seems always correct, but everything after seems corrupted
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