Page 32 - KAPPA - Ecrin v4.30 tutorials

Ecrin v4.20 - Doc v4.20.01 - © KAPPA 1988-2011 Ecrin Guided Session #1 • EcrGS01 - 30/36
This can be done as follows:
1. Make Diamant active again by clicking on in the toolbar.
2. In Diamant, click on EcrGS01p Fltd data and select the Plot View mode .
3. Zoom in on Build-up #2 using the toolbar icon (start around August 3rd, 2001, end
at August 6th 2001) and use the time selection icon in the plot toolbar to highlight a
time interval containing the build-up. You can zoom in several times to obtain better
results. You can also perform a zoom reset whenever necessary to start the
selection again.
4. It is possible to re-load the data for the highlighted section only. The 'Partial re-load'
option is called with the icon . You will be prompted to backup your original data.
Activate ‘Backup the original data’ and press ‘OK’ to continue. Diamant reconnects to
the source of the data and positions itself on the selected interval. We may now change
the filter settings for that section. In this case we will not choose not to use any filtering
and re-download raw data only. (Fig. E01.8).
5. In the Filters dialog uncheck: 'Wavelet', and 'Post-filtration'. Press 'Load'. (Fig. E01.9).
6. The modified EcrGS01p Fltd data gauge contains now the raw data in Build-up#2. If
you check the information of the new data, you can now see the number of points is
about 370 000 instead of 26 000.
7. Click on the icon to send this ‘repopulated’ data set to Saphir.
Fig. E01.9 • Selecting the Build-up # 1
Fig. E01.10 • Partial re-load with no filter
No noticeable difference is seen in the shape of the derivative other
than added noise, Figure E01.11. The wavelet filter, as we set it
originally, did capture the characteristic features of the response while
significantly reducing the number of points and thus eliminating the
noise. So in the Saphir document, we can safely revert the analysis
pressure to the first gauge (Fltd data Backup), see opposite.