annotations aren't plotted properly on log axes

[cldougl]

Looks like annotations don't show up at the expected coordinates when axes are type: 'log'

example: http://codepen.io/plotly/pen/dOwRyG

[etpinard]

Unfortunately. you have to Math.log10 the x/y position https://codepen.io/alexcjohnson/pen/yLGPgdE

You shouldn't have to do this, but there's no way for us to fix this is in a backward compatible way.

[ricardovb]

@etpinard Your solution is wrong ,, you must use: Math.log(x)/ Math.log(10) because Math.log is base E.

[etpinard]

or use Math.log10.

thanks @ricardovb

[tiagobrc]

The same Bug on Plotly for R. Solved in the same way. Thank you!

[codingbandit]

Ran into this today - thanks for the workaround!

[alexcjohnson]

Another option occurred to me while responding to @orenbenkiki's suggestion plotly/dash#916 (comment) - we could imagine adding a new axis attribute like coordinates: 'legacy'|'data' to opt into the "v2" behavior.

[orenbenkiki]

I actually suggested adding a value to the ref attributes: xref='X' or xref='x!' or xref='x_with_transformations' or something along these lines. Adding a new attribute might be cleaner, though.

[kgdunn]

The above suggestions of using the log of the value to make the annotation do not work either when using log axes and adding an hline with annotation:

fig.add_hline( y=1E6, line_color="red", annotation_text="Lower limit", annotation_position="top left", )
The hline is drawn at the correct place, but the annotation is shown a some monstrously large value on the y-axis. How would one go about fixing this?

[Sank-WoT]

Here is another example of how poorly log coordinates work:
https://community.plotly.com/t/wrong-annotation-location-of-vrect-on-log-graph/58550/2

[Turakar]

Unfortunately. you have to Math.log the x/y position http://codepen.io/etpinard/pen/oYJwLx

You shouldn't have to do this, but there's no way for us to fix this is in a backward compatible way.

Seems like this example is broken by now.