Differences

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--- faq [2022/06/15 14:48] – Curve controls crossing the far wall can cause the same error tarquinwj
+++ faq [2023/10/16 10:27] (current) – Visualising drawing errors and distortion - clarify debug dots and colours brucemutton
@@ Line 150: / Line 150: @@
 Xtherion "normal": {{therion:join_scraps_normal_xtherion.gif?120}} pdf "normal": {{therion:join_scraps_normal_pdf.gif?120}} Xtherion "tricky": {{therion:join_scraps_tricky_xtherion.gif?120}} pdf "tricky": {{therion:join_scraps_tricky_pdf.gif?120}} //Click on picture to see original size//
+There is much simpler way - just by join command. Create in one scrap invisible line wall on open end with just tree not smooth points. Join the middle point of this line (l_line:1) to end or beginning of appropriate line of one of another scraps.
 see also [[tips#joining_scraps_together]]
@@ Line 591: / Line 593: @@
   * **blue-lines** - scraps adjusted to survey stations (before processing joins)
-  * **red points** - original positions of survey stations
+  * **small red points** - original positions of survey stations
-  * **yellow points** connected by yellow line - original position of two points in scrap with maximal distortion
+  * **large yellow points** connected by yellow line - original position of two points in scrap with maximal distortion
-  * **black points** connected by black line - final position of two points in scrap with maximal distortion
+  * **large black points** connected by black line - final position of two points in scrap with maximal distortion
-  * **orange points** - the points with distance changed most during transformation
+  * **large red points** - the (station) points with distance changed most during transformation
   * **yellow lines** connecting black and yellow points indicate how these points were shifted
@@ Line 605: / Line 607: @@
    - The size of the maximum distortion (for a scrap) is proportional to the distance between the black point from it's corresponding yellow point (black and yellow joined by yellow).
    - If the black points are obscured under the corresponding yellow points, then the maximum distortion is not very much at all.
-   - Spacing of matched pairs of yellow points, or black points is of little significance, perhaps it is an indication of the size of area in the scrap that has 'maximum distortion'.
+   - Spacing of matched pairs of yellow points, or black points is of little significance. Perhaps it is, together with the large red point (if present), an indication of the size of area in the scrap that has 'maximum distortion'.
 We can create a special layout to hide distracting features, and emphasize the debug characteristics we are interested in.