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jo-pol committed Apr 19, 2023
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title: Modify stitches
---

Drop/restore stitches
Ignore/restore stitches
=======================

![](images/legend-and-ids.png)

How to modify stitches is explained in the getting started [tutorial](#modify-stitches).
A more advanced subject is skipping/dropping stitches and restore them.
How to modify stitches is explained in the getting started [tutorial](index#modify-stitches).
A more advanced subject is skipping/ignoring stitches and restore them.

Drop stitches
Ignore stitches
-------------
To remove a stitch from the pattern, you can use `-` (a single dash and no other symbols) for the stitch.
To remove a stitch from the pair diagram, you can use `-` (a single dash and no other symbols) for the stitch.
If you delete all the text from a stitch field, the default value is used.
The default stitch is `ctc`.

_Warning_: too many adjacent dropped stitches may cause weird thread diagrams
_Warning_: ignored stitches may cause weird thread diagrams
in which the pairs swap before a stitch is made.

Restore stitches
-------------
An explanation of a versatile [Binche](Binche) pattern still uses the old old method to explain dropping stitches.
That method still works though the pattern no longer has colors.
You can drop the stitches also in the new style pair diagram,
but to restore a dropped stitch you need the diagram under `edit pattern`.
An explanation of a versatile [Binche](Binche) pattern still uses the old old method explained as stitches.
That method no longer.
When the address bars has `GroundForge/tile` please replace it to `GroundForge/stitches`.
Then you get subsection of a page with a button to restore ignored stitches.

Reconnected stitches
--------------------
When stitches are dropped, the algorithm has to reconnect the involved pairs with the adjacent stitches.
When stitches are ignored, the algorithm has to reconnect the involved pairs with the adjacent stitches.

The green annotations in the screen shot below show how the remaining stitches reconnect in the pair diagram after a dropped stitch.
The green annotations in the screen shot below show how the remaining stitches reconnect in the pair diagram after an ignored stitch.
One case is straight forward. In the other case, because the GroundForge pair diagram treats stitch-pin-stitch as a single stitch, the stitches are merged two by two.

The ![animate](/GroundForge/images/animate.png) button simulates what the pattern looks like when the connections between stitches act like springs.
The same spring behaviour is used to create the thread diagrams. Aplying the animate button creates a pair diagram that can be used as a pricking for the thread diagram.
The same spring behaviour is used to create the thread diagrams. Applying the animate button creates a pair diagram that can be used as a pricking for the thread diagram.

You can [try](/GroundForge/tiles?patchWidth=12&patchHeight=13&g1=ctct&e1=ctct&c1=ctct&a1=ctct&f2=ctct&b2=-&g3=ctct&e3=ctct&c3=ctct&a3=ctct&h4=ctct&f4=-&d4=ctct&b4=ctct&g5=ctct&e5=ctct&c5=ctct&a5=ctct&f6=ctct&b6=ctct&g7=ctct&e7=ctct&c7=ctct&a7=ctct&h8=ctct&f8=ctct&d8=ctct&b8=ctct&tile=5-5-5-5-,-5---5--,B-C-B-C-,-5-5-5-5,5-5-5-5-,-5---5--,B-C-B-C-,-5-5-5-5,&footsideStitch=tctct&tileStitch=ctct&headsideStitch=tctct&shiftColsSW=0&shiftRowsSW=8&shiftColsSE=8&shiftRowsSE=8)
variations.
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