Manually stretch arrow in MathJax -


i using extpfeil extension in mathjax produce arrows in html page. in particular using:

\newextarrow{\cs}{lspace,rspace}{unicode-char}

this works great arrows (for example, see answer davide), documentation states:

note mathjax knows how stretch limited number of characters, may not stretchy character way.

unfortunately, need use 1 of these non-supported characters (specifically, 0x21cc), , nice if stretch. there way can manually specify amount stretch arrows in nice way? context, i'm trying make chemical reaction diagrams this:

enter image description here

the overset , underset variables may few characters long, stretching necessary.

the ability of mathjax stretch character depends on availability of appropriate glyphs within font using. mathjax tex font (the usual web-based font) doesn't have necessary glyphs stretch u+21cc; however, stix fonts do, , of version 2.3, mathjax includes web versions of stix fonts. if authoring own pages , can specify font, u+21cc stretch. if using site stackexchange, can't control font, limited font in use.

to this, add

<script type="text/x-mathjax-config"> mathjax.hub.config({   "html-css": {     preferredfont: "stix",     availablefonts: ["stix"],     webfont: "stix-web"   },   svg: {     font: "stix-web"   },   tex: {     extensions: ["extpfeil.js"]   } }); </script>

just before script loads mathjax.js. in body of page use

<div style="display:none"> $$\newextarrow{\rightleftharpoons}{5,5}{0x21cc}$$ </div>

to define arrow (somewhere on before used. use

\rightleftharpoons[xyz]{abcdefg}

to put "abcdefg" on arrow , "xyz" below it, , have stretch. looks vertical positioning of under-text not great (it bit low), arrow stretches!

here example:

\rightlftharpoons example


Comments

Post a Comment

Popular posts from this blog

android - Get AccessToken using signpost OAuth without opening a browser (Two legged Oauth) -

i using signpost oauth access data magento server. have read various tutorials on same , reach point open browser user can enter credentials. however, per requirement have automate part. hence, user should not browser page. have set-up done on server side ( magento ), hit url , returned call page. same through program in android. i have tried below, consumer = new commonshttpoauthconsumer(key, secret); provider = new commonshttpoauthprovider(oauth_init_url,access_token_url, authorize_url); try { provider.retrieverequesttoken(consumer, oauth.out_of_band); log.d("tokens" , consumer.gettoken() + " -- " + consumer.gettokensecret()); } and request tokens. dont know how bypass next step. tried directly accessing accesstoken (stupid of me) provider.retrieveaccesstoken(consumer, "mycallback://callback"); no luck, ends in oauth.signpost.exception.oauthnotauthorizedexception: authorization failed (server replied 401). ...
Read more

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: mockito -

getting error org.mockito.exceptions.misusing.invaliduseofmatchersexception: invalid use of argument matchers! 1 matchers expected, 2 recorded. exception may occur if matchers combined raw values: //incorrect: somemethod(anyobject(), "raw string"); when using matchers, arguments have provided matchers. example: //correct: somemethod(anyobject(), eq("string matcher")); at when( getprogramservice .callservice(any(getprogramtype.class))) .thenreturn(jaxbresponse); please explain error , possible resolution the code posted looks fine; don't see problem it. code before or above causing exception. key here: invalid use of argument matchers! 1 matchers expected, 2 recorded. any , used above, doesn't return "special kind of null" or "special kind of getprogramtype"; don't exist. instead, returns null , side effect puts matcher on stack. whe...
Read more

google shop client API returns 400 bad request error while adding an item -

i'm working on solution add items in google shopping market java application. following tutorial real mess because of missing classes of laste release, after setting 1.5-beta maven managed make base example typecheck correctly classes. still can make simple task of adding 1 item. instead of posting whole code i'm posting part creates product feed. private product createproduct(string id) { product product = new product(); product.title = "red wool sweater"; product.content = new content( "text", "comfortable , soft, sweater keep warm on " + "cold winter nights. red , blue stripes."); product.appcontrol = new appcontrol(); product.appcontrol.addrequireddestination("productads"); product.externalid = id; product.lang = "it"; product.country = "it"; product.condition = "nuovo"; product.price = new price("eu...
Read more