covutils/covutils.min.js

Utilities for creating, transforming, and handling Coverage Data objects.

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e,a=t.x,r=t.y,s=r-this.lat0,n=a-this.long0,h=s/i*1e-5,o=n,u=1,l=0;for(e=1;10>=e;e++)u*=h,l+=this.A[e]*u;var f,c,p=l,d=o,y=1,m=0,v=0,M=0;for(e=1;6>=e;e++)f=y*p-m*d,c=m*p+y*d,y=f,m=c,v=v+this.B_re[e]*y-this.B_im[e]*m,M=M+this.B_im[e]*y+this.B_re[e]*m;return t.x=M*this.a+this.x0,t.y=v*this.a+this.y0,t},e.inverse=function(t){var e,a,r,s=t.x,n=t.y,h=s-this.x0,o=n-this.y0,u=o/this.a,l=h/this.a,f=1,c=0,p=0,d=0;for(e=1;6>=e;e++)a=f*u-c*l,r=c*u+f*l,f=a,c=r,p=p+this.C_re[e]*f-this.C_im[e]*c,d=d+this.C_im[e]*f+this.C_re[e]*c;for(var y=0;y<this.iterations;y++){var m,v,M=p,g=d,b=u,_=l;for(e=2;6>=e;e++)m=M*p-g*d,v=g*p+M*d,M=m,g=v,b+=(e-1)*(this.B_re[e]*M-this.B_im[e]*g),_+=(e-1)*(this.B_im[e]*M+this.B_re[e]*g);M=1,g=0;var x=this.B_re[1],w=this.B_im[1];for(e=2;6>=e;e++)m=M*p-g*d,v=g*p+M*d,M=m,g=v,x+=e*(this.B_re[e]*M-this.B_im[e]*g),w+=e*(this.B_im[e]*M+this.B_re[e]*g);var P=x*x+w*w;p=(b*x+_*w)/P,d=(_*x-b*w)/P}var j=p,k=d,S=1,C=0;for(e=1;9>=e;e++)S*=j,C+=this.D[e]*S;var E=this.lat0+C*i*1e5,O=this.long0+k;return t.x=O,t.y=E,t},e.names=["New_Zealand_Map_Grid","nzmg"]}),ae=ie&&"object"==typeof ie&&"default"in ie?ie["default"]:ie,re=y(function(t,e){var i=St,a=jt,r=wt,s=_t,n=Nt,h=Dt,o=Et,u=1e-10,l=gt,f=20;e.init=function(){this.temp=this.b/this.a,this.es=1-Math.pow(this.temp,2),this.e=Math.sqrt(this.es),this.e0=i(this.es),this.e1=a(this.es),this.e2=r(this.es),this.e3=s(this.es),this.ml0=this.a*o(this.e0,this.e1,this.e2,this.e3,this.lat0)},e.forward=function(t){var e,i,a,r=t.x,s=t.y,f=n(r-this.long0);if(a=f*Math.sin(s),this.sphere)Math.abs(s)<=u?(e=this.a*f,i=-1*this.a*this.lat0):(e=this.a*Math.sin(a)/Math.tan(s),i=this.a*(h(s-this.lat0)+(1-Math.cos(a))/Math.tan(s)));else if(Math.abs(s)<=u)e=this.a*f,i=-1*this.ml0;else{var c=l(this.a,this.e,Math.sin(s))/Math.tan(s);e=c*Math.sin(a),i=this.a*o(this.e0,this.e1,this.e2,this.e3,s)-this.ml0+c*(1-Math.cos(a))}return t.x=e+this.x0,t.y=i+this.y0,t},e.inverse=function(t){var e,i,a,r,s,h,l,c,p;if(a=t.x-this.x0,r=t.y-this.y0,this.sphere)if(Math.abs(r+this.a*this.lat0)<=u)e=n(a/this.a+this.long0),i=0;else{h=this.lat0+r/this.a,l=a*a/this.a/this.a+h*h,c=h;var d;for(s=f;s;--s)if(d=Math.tan(c),p=-1*(h*(c*d+1)-c-.5*(c*c+l)*d)/((c-h)/d-1),c+=p,Math.abs(p)<=u){i=c;break}e=n(this.long0+Math.asin(a*Math.tan(c)/this.a)/Math.sin(i))}else if(Math.abs(r+this.ml0)<=u)i=0,e=n(this.long0+a/this.a);else{h=(this.ml0+r)/this.a,l=a*a/this.a/this.a+h*h,c=h;var y,m,v,M,g;for(s=f;s;--s)if(g=this.e*Math.sin(c),y=Math.sqrt(1-g*g)*Math.tan(c),m=this.a*o(this.e0,this.e1,this.e2,this.e3,c),v=this.e0-2*this.e1*Math.cos(2*c)+4*this.e2*Math.cos(4*c)-6*this.e3*Math.cos(6*c),M=m/this.a,p=(h*(y*M+1)-M-.5*y*(M*M+l))/(this.es*Math.sin(2*c)*(M*M+l-2*h*M)/(4*y)+(h-M)*(y*v-2/Math.sin(2*c))-v),c-=p,Math.abs(p)<=u){i=c;break}y=Math.sqrt(1-this.es*Math.pow(Math.sin(i),2))*Math.tan(i),e=n(this.long0+Math.asin(a*y/this.a)/Math.sin(i))}return t.x=e,t.y=i,t},e.names=["Polyconic","poly"]}),se=re&&"object"==typeof re&&"default"in re?re["default"]:re,ne=y(function(t,e){var i=Nt,a=Dt;e.init=function(){this.x0=this.x0||0,this.y0=this.y0||0,this.lat0=this.lat0||0,this.long0=this.long0||0,this.lat_ts=this.lat_ts||0,this.title=this.title||"Equidistant Cylindrical (Plate Carre)",this.rc=Math.cos(this.lat_ts)},e.forward=function(t){var e=t.x,r=t.y,s=i(e-this.long0),n=a(r-this.lat0);return t.x=this.x0+this.a*s*this.rc,t.y=this.y0+this.a*n,t},e.inverse=function(t){var e=t.x,r=t.y;return t.x=i(this.long0+(e-this.x0)/(this.a*this.rc)),t.y=a(this.lat0+(r-this.y0)/this.a),t},e.names=["Equirectangular","Equidistant_Cylindrical","eqc"]}),he=ne&&"object"==typeof ne&&"default"in ne?ne["default"]:ne,oe=y(function(t){var e=Math.PI/2;t.exports=function(t,i){var a=1-(1-t*t)/(2*t)*Math.log((1-t)/(1+t));if(Math.abs(Math.abs(i)-a)<1e-6)return 0>i?-1*e:e;for(var 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t.x=(t.x-this.x0)/this.a,t.y=(t.y-this.y0)/this.a,t.x/=this.k0,t.y/=this.k0,(e=Math.sqrt(t.x*t.x+t.y*t.y))?(n=Math.atan2(e,this.rc),a=Math.sin(n),s=Math.cos(n),o=r(s*this.sin_p14+t.y*a*this.cos_p14/e),h=Math.atan2(t.x*a,e*this.cos_p14*s-t.y*this.sin_p14*a),h=i(this.long0+h)):(o=this.phic0,h=0),t.x=h,t.y=o,t},e.names=["gnom"]}),ye=de&&"object"==typeof de&&"default"in de?de["default"]:de,me=y(function(t,e){var i=1e-10,a=zt,r=fe,s=Nt,n=vt;e.init=function(){Math.abs(this.lat1+this.lat2)<i||(this.temp=this.b/this.a,this.es=1-Math.pow(this.temp,2),this.e3=Math.sqrt(this.es),this.sin_po=Math.sin(this.lat1),this.cos_po=Math.cos(this.lat1),this.t1=this.sin_po,this.con=this.sin_po,this.ms1=a(this.e3,this.sin_po,this.cos_po),this.qs1=r(this.e3,this.sin_po,this.cos_po),this.sin_po=Math.sin(this.lat2),this.cos_po=Math.cos(this.lat2),this.t2=this.sin_po,this.ms2=a(this.e3,this.sin_po,this.cos_po),this.qs2=r(this.e3,this.sin_po,this.cos_po),this.sin_po=Math.sin(this.lat0),this.cos_po=Math.cos(this.lat0),this.t3=this.sin_po,this.qs0=r(this.e3,this.sin_po,this.cos_po),Math.abs(this.lat1-this.lat2)>i?this.ns0=(this.ms1*this.ms1-this.ms2*this.ms2)/(this.qs2-this.qs1):this.ns0=this.con,this.c=this.ms1*this.ms1+this.ns0*this.qs1,this.rh=this.a*Math.sqrt(this.c-this.ns0*this.qs0)/this.ns0)},e.forward=function(t){var e=t.x,i=t.y;this.sin_phi=Math.sin(i),this.cos_phi=Math.cos(i);var a=r(this.e3,this.sin_phi,this.cos_phi),n=this.a*Math.sqrt(this.c-this.ns0*a)/this.ns0,h=this.ns0*s(e-this.long0),o=n*Math.sin(h)+this.x0,u=this.rh-n*Math.cos(h)+this.y0;return t.x=o,t.y=u,t},e.inverse=function(t){var e,i,a,r,n,h;return t.x-=this.x0,t.y=this.rh-t.y+this.y0,this.ns0>=0?(e=Math.sqrt(t.x*t.x+t.y*t.y),a=1):(e=-Math.sqrt(t.x*t.x+t.y*t.y),a=-1),r=0,0!==e&&(r=Math.atan2(a*t.x,a*t.y)),a=e*this.ns0/this.a,this.sphere?h=Math.asin((this.c-a*a)/(2*this.ns0)):(i=(this.c-a*a)/this.ns0,h=this.phi1z(this.e3,i)),n=s(r/this.ns0+this.long0),t.x=n,t.y=h,t},e.phi1z=function(t,e){var a,r,s,h,o,u=n(.5*e);if(i>t)return u;for(var l=t*t,f=1;25>=f;f++)if(a=Math.sin(u),r=Math.cos(u),s=t*a,h=1-s*s,o=.5*h*h/r*(e/(1-l)-a/h+.5/t*Math.log((1-s)/(1+s))),u+=o,Math.abs(o)<=1e-7)return u;return null},e.names=["Albers_Conic_Equal_Area","Albers","aea"]}),ve=me&&"object"==typeof me&&"default"in me?me["default"]:me,Me=y(function(t,e){var i=Math.PI/2,a=Math.PI/4,r=1e-10,s=fe,n=Nt;e.S_POLE=1,e.N_POLE=2,e.EQUIT=3,e.OBLIQ=4,e.init=function(){var t=Math.abs(this.lat0);if(Math.abs(t-i)<r?this.mode=this.lat0<0?this.S_POLE:this.N_POLE:Math.abs(t)<r?this.mode=this.EQUIT:this.mode=this.OBLIQ,this.es>0){var e;switch(this.qp=s(this.e,1),this.mmf=.5/(1-this.es),this.apa=this.authset(this.es),this.mode){case this.N_POLE:this.dd=1;break;case this.S_POLE:this.dd=1;break;case this.EQUIT:this.rq=Math.sqrt(.5*this.qp),this.dd=1/this.rq,this.xmf=1,this.ymf=.5*this.qp;break;case this.OBLIQ:this.rq=Math.sqrt(.5*this.qp),e=Math.sin(this.lat0),this.sinb1=s(this.e,e)/this.qp,this.cosb1=Math.sqrt(1-this.sinb1*this.sinb1),this.dd=Math.cos(this.lat0)/(Math.sqrt(1-this.es*e*e)*this.rq*this.cosb1),this.ymf=(this.xmf=this.rq)/this.dd,this.xmf*=this.dd}}else this.mode===this.OBLIQ&&(this.sinph0=Math.sin(this.lat0),this.cosph0=Math.cos(this.lat0))},e.forward=function(t){var e,h,o,u,l,f,c,p,d,y,m=t.x,v=t.y;if(m=n(m-this.long0),this.sphere){if(l=Math.sin(v),y=Math.cos(v),o=Math.cos(m),this.mode===this.OBLIQ||this.mode===this.EQUIT){if(h=this.mode===this.EQUIT?1+y*o:1+this.sinph0*l+this.cosph0*y*o,r>=h)return null;h=Math.sqrt(2/h),e=h*y*Math.sin(m),h*=this.mode===this.EQUIT?l:this.cosph0*l-this.sinph0*y*o}else if(this.mode===this.N_POLE||this.mode===this.S_POLE){if(this.mode===this.N_POLE&&(o=-o),Math.abs(v+this.phi0)<r)return null;h=a-.5*v,h=2*(this.mode===this.S_POLE?Math.cos(h):Math.sin(h)),e=h*Math.sin(m),h*=o}}else{switch(c=0,p=0,d=0,o=Math.cos(m),u=Math.sin(m),l=Math.sin(v),f=s(this.e,l),this.mode!==this.OBLIQ&&this.mode!==this.EQUIT||(c=f/this.qp,p=Math.sqrt(1-c*c)),this.mode){case this.OBLIQ:d=1+this.sinb1*c+this.cosb1*p*o;break;case this.EQUIT:d=1+p*o;break;case this.N_POLE:d=i+v,f=this.qp-f;break;case this.S_POLE:d=v-i,f=this.qp+f}if(Math.abs(d)<r)return null;switch(this.mode){case this.OBLIQ:case this.EQUIT:d=Math.sqrt(2/d),h=this.mode===this.OBLIQ?this.ymf*d*(this.cosb1*c-this.sinb1*p*o):(d=Math.sqrt(2/(1+p*o)))*c*this.ymf,e=this.xmf*d*p*u;break;case this.N_POLE:case this.S_POLE:f>=0?(e=(d=Math.sqrt(f))*u,h=o*(this.mode===this.S_POLE?d:-d)):e=h=0}}return t.x=this.a*e+this.x0,t.y=this.a*h+this.y0,t},e.inverse=function(t){t.x-=this.x0,t.y-=this.y0;var e,a,s,h,o,u,l,f=t.x/this.a,c=t.y/this.a;if(this.sphere){var p,d=0,y=0;if(p=Math.sqrt(f*f+c*c),a=.5*p,a>1)return null;switch(a=2*Math.asin(a),this.mode!==this.OBLIQ&&this.mode!==this.EQUIT||(y=Math.sin(a),d=Math.cos(a)),this.mode){case this.EQUIT:a=Math.abs(p)<=r?0:Math.asin(c*y/p),f*=y,c=d*p;break;case this.OBLIQ:a=Math.abs(p)<=r?this.phi0:Math.asin(d*this.sinph0+c*y*this.cosph0/p),f*=y*this.cosph0,c=(d-Math.sin(a)*this.sinph0)*p;break;case this.N_POLE:c=-c,a=i-a;break;case this.S_POLE:a-=i}e=0!==c||this.mode!==this.EQUIT&&this.mode!==this.OBLIQ?Math.atan2(f,c):0}else{if(l=0,this.mode===this.OBLIQ||this.mode===this.EQUIT){if(f/=this.dd,c*=this.dd,u=Math.sqrt(f*f+c*c),r>u)return t.x=0,t.y=this.phi0,t;h=2*Math.asin(.5*u/this.rq),s=Math.cos(h),f*=h=Math.sin(h),this.mode===this.OBLIQ?(l=s*this.sinb1+c*h*this.cosb1/u,o=this.qp*l,c=u*this.cosb1*s-c*this.sinb1*h):(l=c*h/u,o=this.qp*l,c=u*s)}else if(this.mode===this.N_POLE||this.mode===this.S_POLE){if(this.mode===this.N_POLE&&(c=-c),o=f*f+c*c,!o)return t.x=0,t.y=this.phi0,t;l=1-o/this.qp,this.mode===this.S_POLE&&(l=-l)}e=Math.atan2(f,c),a=this.authlat(Math.asin(l),this.apa)}return t.x=n(this.long0+e),t.y=a,t},e.P00=.3333333333333333,e.P01=.17222222222222222,e.P02=.10257936507936508,e.P10=.06388888888888888,e.P11=.0664021164021164,e.P20=.016415012942191543,e.authset=function(t){var e,i=[];return i[0]=t*this.P00,e=t*t,i[0]+=e*this.P01,i[1]=e*this.P10,e*=t,i[0]+=e*this.P02,i[1]+=e*this.P11,i[2]=e*this.P20,i},e.authlat=function(t,e){var i=t+t;return t+e[0]*Math.sin(i)+e[1]*Math.sin(i+i)+e[2]*Math.sin(i+i+i)},e.names=["Lambert Azimuthal Equal Area","Lambert_Azimuthal_Equal_Area","laea"]}),ge=Me&&"object"==typeof Me&&"default"in Me?Me["default"]:Me,be=y(function(t,e){var i=Et,a=St,r=jt,s=wt,n=_t,h=gt,o=Nt,u=Dt,l=yt,f=Math.PI/2,c=1e-10;e.init=function(){this.sphere||(this.e0=a(this.es),this.e1=r(this.es),this.e2=s(this.es),this.e3=n(this.es),this.ml0=this.a*i(this.e0,this.e1,this.e2,this.e3,this.lat0))},e.forward=function(t){var e,a,r=t.x,s=t.y;if(r=o(r-this.long0),this.sphere)e=this.a*Math.asin(Math.cos(s)*Math.sin(r)),a=this.a*(Math.atan2(Math.tan(s),Math.cos(r))-this.lat0);else{var n=Math.sin(s),u=Math.cos(s),l=h(this.a,this.e,n),f=Math.tan(s)*Math.tan(s),c=r*Math.cos(s),p=c*c,d=this.es*u*u/(1-this.es),y=this.a*i(this.e0,this.e1,this.e2,this.e3,s);e=l*c*(1-p*f*(1/6-(8-f+8*d)*p/120)),a=y-this.ml0+l*n/u*p*(.5+(5-f+6*d)*p/24)}return t.x=e+this.x0,t.y=a+this.y0,t},e.inverse=function(t){t.x-=this.x0,t.y-=this.y0;var e,i,a=t.x/this.a,r=t.y/this.a;if(this.sphere){var s=r+this.lat0;e=Math.asin(Math.sin(s)*Math.cos(a)),i=Math.atan2(Math.tan(a),Math.cos(s))}else{var n=this.ml0/this.a+r,p=l(n,this.e0,this.e1,this.e2,this.e3);if(Math.abs(Math.abs(p)-f)<=c)return t.x=this.long0,t.y=f,0>r&&(t.y*=-1),t;var d=h(this.a,this.e,Math.sin(p)),y=d*d*d/this.a/this.a*(1-this.es),m=Math.pow(Math.tan(p),2),v=a*this.a/d,M=v*v;e=p-d*Math.tan(p)/y*v*v*(.5-(1+3*m)*v*v/24),i=v*(1-M*(m/3+(1+3*m)*m*M/15))/Math.cos(p)}return t.x=o(i+this.long0),t.y=u(e),t},e.names=["Cassini","Cassini_Soldner","cass"]}),_e=be&&"object"==typeof be&&"default"in be?be["default"]:be,xe=y(function(t,e){var i=Nt;e.init=function(){this.a=6377397.155,this.es=.006674372230614,this.e=Math.sqrt(this.es),this.lat0||(this.lat0=.863937979737193),this.long0||(this.long0=.4334234309119251),this.k0||(this.k0=.9999),this.s45=.785398163397448,this.s90=2*this.s45,this.fi0=this.lat0,this.e2=this.es,this.e=Math.sqrt(this.e2),this.alfa=Math.sqrt(1+this.e2*Math.pow(Math.cos(this.fi0),4)/(1-this.e2)),this.uq=1.04216856380474,this.u0=Math.asin(Math.sin(this.fi0)/this.alfa),this.g=Math.pow((1+this.e*Math.sin(this.fi0))/(1-this.e*Math.sin(this.fi0)),this.alfa*this.e/2),this.k=Math.tan(this.u0/2+this.s45)/Math.pow(Math.tan(this.fi0/2+this.s45),this.alfa)*this.g,this.k1=this.k0,this.n0=this.a*Math.sqrt(1-this.e2)/(1-this.e2*Math.pow(Math.sin(this.fi0),2)),this.s0=1.37008346281555,this.n=Math.sin(this.s0),this.ro0=this.k1*this.n0/Math.tan(this.s0),this.ad=this.s90-this.uq},e.forward=function(t){var e,a,r,s,n,h,o,u=t.x,l=t.y,f=i(u-this.long0);return e=Math.pow((1+this.e*Math.sin(l))/(1-this.e*Math.sin(l)),this.alfa*this.e/2),a=2*(Math.atan(this.k*Math.pow(Math.tan(l/2+this.s45),this.alfa)/e)-this.s45),r=-f*this.alfa,s=Math.asin(Math.cos(this.ad)*Math.sin(a)+Math.sin(this.ad)*Math.cos(a)*Math.cos(r)),n=Math.asin(Math