custom notation offset?

[adamjakab]

Why is my custom notation %X/X.0/0.0/0.2/1.3/2.2/3[Re] is not rendering as the built in "D" chord? It is correct but mine is getting moved up by a fret.
Is there something I am doing wrong?

[tardate]

Hi Adam, it seems like a limitation of the custom notation handling.

These are both correct / same chord, but the custom notation has decided to draw the chord diagram from fret 1, not the nut in the standard diagram.

I don't think there's a way to force it to draw otherwise in the current jTab.

Actually it should make a better guess in this case - it is 'obvious' it should draw the diagram from root position

[tardate]

btw, was your intention to simply translate the names of standard chords? Yes, translation for a range of languages/traditions would be a nice feature to have

[adamjakab]

No, not really - I am playing about with JTab because I want to put up an on-line service (mostly for my own necessities) where one can register songs with chords (view/print them with chord diagrams) and compile songs into song-books. Something very simple. When I found jTab I got really happy because it has everything I need for this project but because I want to set up my own database of chords (so that the user can choose from a variety of C chords to use in that specific song) I do not want to rely on jTab's build-in definitions. This brought me to check on the custom notation (which again is excellent).
I find your notation hard to read: %Fret/Finger.Fret/Finger.Fret/Finger.Fret/Finger.Fret/Finger.Fret/Finger[Name] so I came up with my own (which is probably easier to read only for me): offset#finger@fret/finger@fret/finger@fret/finger@fret/finger@fret/finger@fret.
The main difference being that I extract the initial fret offset from all fret values. So instead of writing
finger 1 @ fret 12 / finger 2 @ fret 13 ... I write offset 12 # finger 1 @ fret 1 / finger 2 @ fret 2 ...

As I said I was just playing about up until I came to D chord and I posted you the question. Actually, with your custom notation there is no way to instruct the renderer to render %X/X.0/0.0/0.2/1.3/2.2/3[Re] as the built in D chord - that is - from the nut(is this how you call it?). With a notation where you can explicitly set the starting position (like mine [clap-clap] ;)) you would be able to do that with 0#x/0/0/1@2/3@3/2@2. Obviously, jTab library should be modified for this.

So, my plans are: 1) for now I have created a 'translator' which translates my notation to jTab notation and I will live with moved D chord(which is still correct anyways). 2) make this project of mine work and put it up somewhere (i'll give u notice when there is something usable). 3) maybe one day check if I want to fix this thing, remove the translator business and add/extend jTab so that it can also understand this type of notation.

Anyways, thanks for jTab. I have not found anything like it on the net.

[szydan]

If anyone is still interested in forcing to draw a tab from a specific position I've made a change in my fork of jtab
Here is a simple page to try
https://szydan.github.io/jtab/
I've made it as I needed it for my own personal use of "Custom Chord Notation"
I've extended the notation with {FRET_NUMBER} at the end
explained here
https://szydan.github.io/jtab/changes/changes.html
I can make a PR to contribute this change back