Markdown to docx/odt: is there a way to set image width globally?

Markdown to docx/odt: is there a way to set image width globally?

[Andrea Borruso]

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Hi,
I use this command to produce odt files.

pandoc -o output.odt --reference-doc=myPandocTemplate.odt input.md

For every image in my Md file I must set something like:

![](./imgs/4116_1.png){ width=100% }

Is there some command line parameter that I can use to set image width 
globally, without writing it for every image?

Thank you

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Re: Markdown to docx/odt: is there a way to set image width globally?

[John MacFarlane]

> Is there some command line parameter that I can use to set image width 
> globally, without writing it for every image?

No, but you could do this with a fairly simple lua filter that
adds this attribute to every image.

Re: Markdown to docx/odt: is there a way to set image width globally?

[Andrea Borruso]

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Hi John,
and thank you

On Sunday, 6 October 2019 23:37:19 UTC+2, John MacFarlane wrote:
>
> No, but you could do this with a fairly simple lua filter that 
> adds this attribute to every image. 
>

I have no idea on how to use it.

I have tried running "pandoc -o output.odt --lua-filter=imgWidth.lua 
--reference-doc=myPandocTemplate.odt input.md"

function Pandoc()
  pandoc.Image({}, png, "title", {width="100%"})
end

 but it does not set image width to 100%.

Best regards

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Re: Markdown to docx/odt: is there a way to set image width globally?

[EBkysko]

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Since the Image element is affected here, you need something like:

Image = function(img) img.attributes.width="100%"; img.attributes.height=
"100%"; return img end

*(NOTE: if the height has already been set, eg by another filter, then only 
setting width to 100% might not be enough, which is why I also put height 
to 100% above; the LaTeX default template will adjust to it by keeping 
aspect ratio and prevent overflow, but I haven't tested what the ODT writer 
will do if height 100% is omitted...)*

If this is the only element to change in this filter, then the filter is:

local filterImageWidth = { Image = function(img) img.attributes.width="100%"
; img.attributes.height="100%"; return img end }

If this is the only filter in your lua file, than the file will simply 
consist of:

return { filterImageWidth }

or

return { { Image = function(img) img.attributes.width="100%"; img.attributes
.height="100%"; return img end } }

You'll see this often written as:

return {
  { Image = function(img)
      img.attributes.width="100%"
      img.attributes.height="100%"
      return img
    end,
  }
}

(which is more manageable if there's instructions)

or, alternatively, you could just write in this lua file:

function Image(img)
  img.attributes.width="100%"
  img.attributes.height="100%"
  return img
end

and Pandoc will construct the return list of filters by itself.

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Re: Markdown to docx/odt: is there a way to set image width globally?

[EBkysko]

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Correction for above, since I can't edit my message :* "which is more 
manageable if there's many instructions"*

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Re: Markdown to docx/odt: is there a way to set image width globally?

[Andrea Borruso]

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Hi EBkysko, only to say thank you very very much.

It works!

 

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