node-sass and round()

[Aurélien Delogu]

Hi!

I'm planning to use node-sass command with a project, but I'm issuing this following error in modular-scale/stylesheets/modular-scale/_pow.scss :

@if round($Exponent) != $Exponent {
    @warn "Unfortunately, you need Compass to use non-integer exponents";
}

If I'm right, libsass (and therefore node-sass) doesn't include compass by itself like sass executable does. Also, I'm not using it but bourbon. How can I make this to work?

[Scott Kellum]

Are you using non-integer numbers in the ms function? like ms(3.4)?

If your answer is no, then don’t worry about this, it will work fine. Please see the compatibility notes for more detail.

[Aurélien Delogu]

But my answer is definitely yes :) Perhaps I didn't understand exactly how to use modular scales in my responsive designs... But I need grained results to have golden ratios at each level of my design (font-size, margins, line-heights, ...).

Should it work if I set a ms-base at 0.001rem per example?

[Scott Kellum]

You may want to have multiple values for ms-base. You can learn more about double standard scales here: http://alistapart.com/article/more-meaningful-typography

Non-integer values don’t really fall at the set intervals of the scale. Don’t get me wrong, I have used them as well, but it’s best to try to avoid them. Double standard scales provide a parallel scale that matches proportions at a different base resulting in more size options without having to go off your scale.

[Scott Kellum]

I would love to have a better pow() function outside of Compass but the algorithms for calculating non-integer exponents are just not worth it.

[Aurélien Delogu]

Thanks for your anwers, I read this article and it clarifies some things to me. I'll try to set a double standard scale in my website, then.

Also, I'm the author of vertical-rhythmic. I'm doing a complete rewrite of the library and trying to have a great compatibility with modular-scale. That's why I'm doing several tests to well see how the whole thing should be working ;)

[Scott Kellum]

Sounds good. Yeah the variable changes I made in v2 were to make things play nice with Compass vertical rhythm. Good luck with your project.

[Aurélien Delogu]

Thanks, I've just pushed the new version. You could take a look if you want, and maybe modify the modular scale documentation part if it seems wrong to you ;)