Differences

This shows you the differences between two versions of the page.

--- kvalobs:kvoss:system:qc2:requirements:algorithms:gapinterpolate [2011-07-05 13:51:48]
paule
+++ kvalobs:kvoss:system:qc2:requirements:algorithms:gapinterpolate [2022-05-31 09:29:32] (current)
@@ Line 1: / Line 1: @@
+Feedback on this page (LA):
+   * The size of gap is essential for allowing interpolation.
+   * The second derivative of the curve (f"(x)) the last 2-3 hours before the gap should influence on the size of an acceptable gap for interpolation; and also influence on whether to interpolate the first two hours of a larger gap or not. E.g.: If f"(x)>0 the last 2-3 hours before a 10 hours gap (graph 4),
+   * Skeptical concerning interpolation of the first two hours. But if the the gap is only 5 hours suggest to accept the interpolation.
+   * If f"(x) is changing sign the last hour before the gap (or second hour after the gap) suggest a two hours interpolation of a larger gap.
+   * Concerning flagging, the acceptable size of a gap will become important for using ftime=1 or ftime=2.
 ====== GAP INTERPOLATION ======
@@ Line 17: / Line 26: @@
 **Original Data**
-{{:kvoss:system:qc2:requirements:algorithms:original_data.png|}}
+{{kvalobs:kvoss:system:qc2:requirements:algorithms:original_data.png|}}
 **Simulated Gaps**
@@ Line 23: / Line 32: @@
 For this example we generate our own gaps so that the results may also be compared to the original values.
-{{:kvoss:system:qc2:requirements:algorithms:simulated_gaps.png|}}
+{{kvalobs:kvoss:system:qc2:requirements:algorithms:simulated_gaps.png|}}
 **Akima Fit**
-{{:kvoss:system:qc2:requirements:algorithms:akima_fit.png|}}
+{{kvalobs:kvoss:system:qc2:requirements:algorithms:akima_fit.png|}}
 **Akima Fit also indicating the interpolated data points (triangles) and original values (red circles)**
-{{:kvoss:system:qc2:requirements:algorithms:original_and_fit.png|}}
+{{kvalobs:kvoss:system:qc2:requirements:algorithms:original_and_fit.png|}}
 **Comparison of data**
@@ Line 51: / Line 60: @@
 The following sketch illustrates these points:
-{{:kvoss:system:qc2:requirements:algorithms:gapinterpolateideas.jpg|}}
+{{kvalobs:kvoss:system:qc2:requirements:algorithms:gapinterpolateideas.jpg|}}
 **Think Tank**