This window lets you remove columns from the dataset, or delete data within a certain date range.
To access this window, choose Delete Data from the
Revise menu:
If you use the Delete selected columns radio button to delete a column,
Windographer will remove that column from the dataset entirely, and it will no longer appear in any list of
data columns. The diagram below illustrates this situation:
Start Time
Spd
Dir
2015-07-30 23:10
9.34
180
2015-07-30 23:20
9.96
203
2015-07-30 23:30
10.86
203
2015-07-30 23:40
10.95
203
2015-07-30 23:50
10.72
225
2015-07-31 00:00
11.35
225
2015-07-31 00:10
12.29
203
2015-07-31 00:20
12.20
180
2015-07-31 00:30
10.59
225
2015-07-31 00:40
10.90
270
2015-07-31 00:50
11.39
248
2015-07-31 01:00
12.07
315
2015-07-31 01:10
10.63
203
2015-07-31 01:20
10.90
180
delete
Start Time
Dir
2015-07-30 23:10
180
2015-07-30 23:20
203
2015-07-30 23:30
203
2015-07-30 23:40
203
2015-07-30 23:50
225
2015-07-31 00:00
225
2015-07-31 00:10
203
2015-07-31 00:20
180
2015-07-31 00:30
225
2015-07-31 00:40
270
2015-07-31 00:50
248
2015-07-31 01:00
315
2015-07-31 01:10
203
2015-07-31 01:20
180
Tip: You can also delete a column from the Configure Dataset window.
If you choose to delete from a column the data within a certain date range, Windographer will remove
those data points but the column itself will remain. The diagram below illustrates this situation:
Start Time
Spd
Dir
2015-07-30 23:10
9.34
180
2015-07-30 23:20
9.96
203
2015-07-30 23:30
10.86
203
2015-07-30 23:40
10.95
203
2015-07-30 23:50
10.72
225
2015-07-31 00:00
11.35
225
2015-07-31 00:10
12.29
203
2015-07-31 00:20
12.20
180
2015-07-31 00:30
10.59
225
2015-07-31 00:40
10.90
270
2015-07-31 00:50
11.39
248
2015-07-31 01:00
12.07
315
2015-07-31 01:10
10.63
203
2015-07-31 01:20
10.90
180
delete
Start Time
Spd
Dir
2015-07-30 23:10
9.34
180
2015-07-30 23:20
9.96
203
2015-07-30 23:30
10.86
203
2015-07-30 23:40
10.95
2015-07-30 23:50
10.72
2015-07-31 00:00
11.35
2015-07-31 00:10
12.29
2015-07-31 00:20
12.20
2015-07-31 00:30
10.59
2015-07-31 00:40
10.90
270
2015-07-31 00:50
11.39
248
2015-07-31 01:00
12.07
315
2015-07-31 01:10
10.63
203
2015-07-31 01:20
10.90
180
Deleting According to Flag Status
You can also delete data flagged with certain flags. The settings below instruct
Windographer to delete any data points flagged with the 'Invalid' flag in the year 2019 in the data columns
'Dir 56.5m' and 'Tmp 2m':
Note that the above settings will cause Windographer to delete any data points flagged as both 'Invalid'
and 'Icing'. Note also that after deleting data, you could reconstruct
the dataset to fill the resulting gaps, but it is not necessary to
do so.
You can also delete data not flagged with certain flags. You may use this if you use flags
to indicate valid or verified data. The settings below, for example, instruct Windographer to delete
any data points in the data columns 'Dir 56.5m' and 'Dir 34m' that occur in the year 2019 that have
NOT been flagged with the 'Direction Confirmed' flag:
Note that the above settings will leave undeleted any data point flagged with 'Direction Confirmed' and some
other flag.
Changing the Start Date or End Date
If necessary, Windographer will reset the start or end date of your dataset after deletion. If you delete data from all data
columns starting from the first time step, Windographer will adjust the start time accordingly. The diagram below illustrates
this situation:
Start Time
Spd
Dir
2015-07-30 23:10
9.34
180
2015-07-30 23:20
9.96
203
2015-07-30 23:30
10.86
203
2015-07-30 23:40
10.95
203
2015-07-30 23:50
10.72
225
2015-07-31 00:00
11.35
225
2015-07-31 00:10
12.29
203
2015-07-31 00:20
12.20
180
2015-07-31 00:30
10.59
225
2015-07-31 00:40
10.90
270
2015-07-31 00:50
11.39
248
2015-07-31 01:00
12.07
315
2015-07-31 01:10
10.63
203
2015-07-31 01:20
10.90
180
delete
Start Time
Spd
Dir
2015-07-31 00:00
11.35
225
2015-07-31 00:10
12.29
203
2015-07-31 00:20
12.20
180
2015-07-31 00:30
10.59
225
2015-07-31 00:40
10.90
270
2015-07-31 00:50
11.39
248
2015-07-31 01:00
12.07
315
2015-07-31 01:10
10.63
203
2015-07-31 01:20
10.90
180
Similarly, if you delete data from all data columns ending at the last time step, Windographer will reset the end date
accordingly. The diagram below illustrates this situation:
Start Time
Spd
Dir
2015-07-30 23:10
9.34
180
2015-07-30 23:20
9.96
203
2015-07-30 23:30
10.86
203
2015-07-30 23:40
10.95
203
2015-07-30 23:50
10.72
225
2015-07-31 00:00
11.35
225
2015-07-31 00:10
12.29
203
2015-07-31 00:20
12.20
180
2015-07-31 00:30
10.59
225
2015-07-31 00:40
10.90
270
2015-07-31 00:50
11.39
248
2015-07-31 01:00
12.07
315
2015-07-31 01:10
10.63
203
2015-07-31 01:20
10.90
180
delete
Start Time
Spd
Dir
2015-07-30 23:10
9.34
180
2015-07-30 23:20
9.96
203
2015-07-30 23:30
10.86
203
2015-07-30 23:40
10.95
203
2015-07-30 23:50
10.72
225
2015-07-31 00:00
11.35
225
2015-07-31 00:10
12.29
203
2015-07-31 00:20
12.20
180
Tip: You do not need to delete data just to exclude it from calculations, since
you can instead flag problematic data and exclude it from calculations and outputs with data filtering.
