function siConvert(r){var t={Y:24,Z:21,E:18,P:15,T:12,G:9,M:6,k:3,"":0,m:-3,"µ":-6,n:-9,p:-12,f:-15,a:-18,z:-21,y:-24};if("string"==typeof r)return t[r];if("number"==typeof r)for(var n in t)if(t[n]===r)return n}function scale(r,t){t=t!==!1,"string"==typeof r&&(r=expand(r)),r=Number(r);var n=0;if(r!=0){n=Math.floor(Math.log10(Math.abs(r)));}n=3*Math.floor(n/3),n>24?n=24:n<-24&&(n=-24),r/=Math.pow(10,n);r=Math.round(r*10)/10;var e=siConvert(n);return 1==t?(String(r)+" "+e).trim():0==t?[r,e]:void 0}function expand(r){var t=0;if("string"==typeof r&&/[a-zA-Z]/.test(r.slice(-1))){var n=r.slice(-1);t=siConvert(n),r=r.slice(0,-1).trim()}return r=Number(r),r*=Math.pow(10,t)}