Change detect_open to detect_change

Positive threshold behaves the same way it behaved before.
With negative threshold the function only detects values (derivatives)
lower (bigger in absolute value) than that.

diff --git a/detect_change.m b/detect_change.m
new file mode 100644 (file)
index 0000000..0c71010
--- /dev/null
+++ b/detect_change.m
@@ -0,0 +1,17 @@
+function changed = detect_change(t, p, threshold = 0.2, min_dist = 10)
+       dp = (p(2:end) - p(1:end - 1)) ./ (t(2:end) - t(1:end - 1));
+       dp = dp / max(dp);
+       changed = dp / threshold > 1;
+       for i = (length(changed):-1:1)
+               j = i - 1;
+               while (j > 0 && t(j) + min_dist > t(i))
+                       if (changed(j) == 1)
+                               changed(i) = 0;
+                               break;
+                       end
+                       j -= 1;
+               end
+       end
+       changed = [0 changed];
+       changed = logical(changed);
+end

diff --git a/detect_open.m b/detect_open.m
deleted file mode 100644 (file)
index 4c20f01..0000000
--- a/detect_open.m
+++ /dev/null
@@ -1,17 +0,0 @@
-function opened = detect_open(t, p, threshold = 0.2, min_dist = 10)
-       dp = (p(2:end) - p(1:end - 1)) ./ (t(2:end) - t(1:end - 1));
-       dp = dp / max(dp);
-       opened = dp > threshold;
-       for i = (length(opened):-1:1)
-               j = i - 1;
-               while (j > 0 && t(j) + min_dist > t(i))
-                       if (opened(j) == 1)
-                               opened(i) = 0;
-                               break;
-                       end
-                       j -= 1;
-               end
-       end
-       opened = [0 opened];
-       opened = logical(opened);
-end