jsdataframe - npm Package Compare versions

Comparing version 0.1.1 to 0.2.0

CHANGES.md

@@ -0,1 +1,10 @@
+
+## 0.2.0
+
+* Implement `df.melt` and `df.pivot` for reshaping data frames
+* Implement `vector.pack`, `df.pack`, and `jd.unpack` for JSON serialization
+* Implement set operations for vectors (union, intersect, setdiff)
+* Implement `vector.indexOf` and `df.locAt` for efficient single-element lookup
+* Implement `df.mapRowDfs` to map over rows as 1-row data frames
+
 ## 0.1.1
@@ -10,2 +19,1 @@
 * Initial version
-

jsdataframe-min.js

@@ -1,3 +0,3 @@
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other "+"row arrays");return r(t,1,e)},Pt.vCat=function(){for(var t=arguments.length,e=ot(t),r=null,n=0,i=0;t>i;i++){var o=arguments[i];if(!Ut(o)&&null!==o&&o.type===Xt.type)throw new Error("cannot pass data frame arguments to jd.vCat");var u=Vt(o);null===r&&"object"!==u.dtype&&(r=u.dtype),n+=u.size(),e[i]=u}r=null===r?"object":r;var s=ot(n),a=0;for(i=0;t>i;i++)for(var l=e[i].values,c=l.length,h=0;c>h;h++)s[a]=l[h],a++;return bt(s,r)},Pt.colCat=function(){for(var t=arguments.length,e=ot(t),r=0;t>r;r++)e[r]=arguments[r];return Pt._colCatArray(e)},Pt._colCatArray=function(t){for(var e,r=t.length,n=[],i=[],o=0;r>o;o++){var u=t[o];if(Ut(u)||null===u)n.push(u),i.push(null);else if(u.type===Xt.type){var s=u._cols.length;for(e=0;s>e;e++)n.push(u._cols[e]),i.push(u._names.values[e])}else if("object"!=typeof u||u.type===Yt.type||Array.isArray(u))n.push(u),i.push(null);else{var a=Object.keys(u);for(e=0;e<a.length;e++){var l=a[e];n.push(u[l]),i.push(l)}}}return 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this._maxWidth},Pt.printingOpts.setMaxWidth=function(t){a(t,le,"maxWidth"),this._maxWidth=t},Pt.printingOpts.getMaxLines=function(){return this._maxLines},Pt.printingOpts.setMaxLines=function(t){a(t,ce,"maxLines"),this._maxLines=t},Pt.printingOpts.setPrintFunction=function(t){St(t,"callback"),this._printCallback=t},Yt.p=function(t){var e=this.printToString(t);Pt.printingOpts._printCallback(e)},Yt.printToString=function(t){if(Ut(t)?t=Pt.printingOpts._maxLines:a(t,ce,"maxLines"),0===this.values.length)return this.toString();var e=o(u(this.values.length,t)),r=o(this._toTruncatedPrintVector(t)),n=Pt.strCat(e,me,r);return this.toString()+"\n"+n.strJoin("\n")},Xt.p=function(t){var e=this.printToString(t);Pt.printingOpts._printCallback(e)},Xt.printToString=function(t){Ut(t)?t=Pt.printingOpts._maxLines:a(t,ce,"maxLines");for(var e=o(Pt.vCat("",u(this.nRow(),t))),r=[e],n=0,i=e.at(0).length,l=Pt.printingOpts._maxWidth-ye.length-me.length;l>=i&&n<this.nCol();){var 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ut(r,"boolean")},Yt.neq=function(t){return this.eq(t).not()},Yt.lt=function(t){t=Vt(t,this.dtype);var e=qt(this.size(),t.size());if(this.dtype!==t.dtype)return Pt.repNa(e,"boolean");var r=ct(this.values,t.values,null,p);return ut(r,"boolean")},Yt.gt=function(t){t=Vt(t,this.dtype);var e=qt(this.size(),t.size());if(this.dtype!==t.dtype)return Pt.repNa(e,"boolean");var r=ct(this.values,t.values,null,d);return ut(r,"boolean")},Yt.lte=function(t){return this.lt(t).or(this.eq(t))},Yt.gte=function(t){return this.gt(t).or(this.eq(t))},Yt.between=function(t,e,r){throw new Error("unimplemented method (TODO)")},Yt.equals=function(t,e){if(it(t)||t.type!==Yt.type||this.size()!==t.size()||this.dtype!==t.dtype)return!1;if(this===t)return!0;var r=f;"number"===this.dtype?r=Ut(e)?m:function(t,r){return Number.isNaN(t)&&Number.isNaN(r)||Math.abs(t-r)<=e}:"object"===this.dtype&&(r=v);for(var n=this.values,i=t.values,o=0;o<n.length;o++)if(!r(n[o],i[o]))return!1;return!0},Yt.min=function(t){var e=this.idxMin(t);return Number.isNaN(e)?ie[this.dtype]:this.values[e]},Yt.max=function(t){var e=this.idxMax(t);return Number.isNaN(e)?ie[this.dtype]:this.values[e]},Yt.cuMin=function(t){Ut(t)&&(t=!0);var e=t?ft(this.values,y):ft(this.values,ie[this.dtype],y);return ut(e,this.dtype)},Yt.cuMax=function(t){Ut(t)&&(t=!0);var e=t?ft(this.values,g):ft(this.values,ie[this.dtype],g);return ut(e,this.dtype)},Yt.idxMin=function(t){Ut(t)&&(t=!0);for(var e=this.values,r=NaN,n=null,i=0;i<e.length;i++){var o=e[i];if(it(o)){if(!t)return NaN}else(Ot(o,n)<0||Number.isNaN(r))&&(n=o,r=i)}return r},Yt.idxMax=function(t){Ut(t)&&(t=!0);for(var e=this.values,r=NaN,n=null,i=0;i<e.length;i++){var o=e[i];if(it(o)){if(!t)return NaN}else(Ot(o,n)>0||Number.isNaN(r))&&(n=o,r=i)}return r},Yt.pMin=function(t){t=Vt(t,this.dtype),It(t,this.dtype);var e=ct(this.values,t.values,ie[this.dtype],y);return ut(e,this.dtype)},Yt.pMax=function(t){t=Vt(t,this.dtype),It(t,this.dtype);var 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Rt(this,"object"),this._getIndex().duplicated(t)},Yt.intersect=function(){throw new Error("unimplemented method (TODO)")},Yt.replace=function(){throw new Error("unimplemented method (TODO)")},Yt.describe=function(){throw new Error("unimplemented method (TODO)")},Yt._getIndex=function(){return null===this._index&&(this._index=nt([this])),this._index},Ht.dtype="number",Ht.add=function(t){t=Vt(t,"number"),It(t,"number");var e=ct(this.values,t.values,NaN,w);return ut(e,"number")},Ht.sub=function(t){t=Vt(t,"number"),It(t,"number");var e=ct(this.values,t.values,NaN,_);return ut(e,"number")},Ht.mul=function(t){t=Vt(t,"number"),It(t,"number");var e=ct(this.values,t.values,NaN,x);return ut(e,"number")},Ht.div=function(t){t=Vt(t,"number"),It(t,"number");var e=ct(this.values,t.values,NaN,N);return ut(e,"number")},Ht.mod=function(t){t=Vt(t,"number"),It(t,"number");var e=ct(this.values,t.values,NaN,E);return ut(e,"number")},Ht.pow=function(t){t=Vt(t,"number"),It(t,"number");var e=ct(this.values,t.values,NaN,Math.pow);return ut(e,"number")},Ht.abs=function(){return ut(this.values.map(Math.abs),"number")},Ht.sqrt=function(){return ut(this.values.map(Math.sqrt),"number")},Ht.sign=function(){return ut(this.values.map(Math.sign),"number")},Ht.ceil=function(){return ut(this.values.map(Math.ceil),"number")},Ht.floor=function(){return ut(this.values.map(Math.floor),"number")},Ht.round=function(){return ut(this.values.map(Math.round),"number")},Ht.exp=function(){return ut(this.values.map(Math.exp),"number")},Ht.log=function(){return ut(this.values.map(Math.log),"number")},Ht.sin=function(){return ut(this.values.map(Math.sin),"number")},Ht.cos=function(){return ut(this.values.map(Math.cos),"number")},Ht.tan=function(){return ut(this.values.map(Math.tan),"number")},Ht.asin=function(){return ut(this.values.map(Math.asin),"number")},Ht.acos=function(){return ut(this.values.map(Math.acos),"number")},Ht.atan=function(){return ut(this.values.map(Math.atan),"number")},Ht.sum=function(t){return Ut(t)&&(t=!0),t?at(this.values,0,w):lt(this.values,0,it,w)},Ht.cuSum=function(t){Ut(t)&&(t=!0);var e=t?ft(this.values,w):ft(this.values,ie.number,w);return ut(e,"number")},Ht.mean=function(t){Ut(t)&&(t=!0);var e={n:0,sum:0},r=t?at(this.values,e,O):lt(this.values,e,it,O);return Number.isNaN(r)||0===r.n?NaN:r.sum/r.n},Ht.stdev=function(t){var e=this["var"](t);return Number.isNaN(e)?NaN:Math.sqrt(e)},Ht["var"]=function(t){Ut(t)&&(t=!0);var e={n:0,mean:0,M2:0},r=t?at(this.values,e,j):lt(this.values,e,it,j);return Number.isNaN(r)||r.n<2?NaN:r.M2/(r.n-1)},Jt.dtype="boolean",Jt.and=function(t){t=Vt(t,"boolean"),It(t,"boolean");var e=ct(this.values,t.values,A);return ut(e,"boolean")},Jt.or=function(t){t=Vt(t,"boolean"),It(t,"boolean");var e=ct(this.values,t.values,C);return ut(e,"boolean");
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at(i,t.dtype)},Jt.repEach=function(t,e){kt(e,"times"),t=Bt(t);for(var r=t.values,n=r.length,i=st(n*e),o=0;n>o;o++)for(var u=o*e,s=0;e>s;s++)i[u+s]=r[o];return at(i,t.dtype)},Jt.repNa=function(t,e){kt(t,"times"),Mt(e);for(var r=se[e],n=st(t),i=0;t>i;i++)n[i]=r;return at(n,e)},Jt.df=function(t,e){Ht(e)||(e=Wt(e));var r;if(t.type===Gt.type)throw new Error('"columns" should not itself be a vector');if(Array.isArray(t)){if(r=t.length,Ht(e))e=mt(r);else if(e.size()!==r)throw new Error('the length of "colNames" ('+e.size()+') does not match the length of "columns" ('+r+")")}else{if("object"!=typeof t)throw new Error('expected "columns" to be an array or object but got: ',t);var n=Object.keys(t);r=n.length;var i=t;if(Ht(e))e=at(n,"string");else{if(e.isNa().any())throw new Error('"colNames" cannot have null entries when '+'"columns" is an object');if(e.duplicated().any())throw new Error('"colNames" cannot have duplicate entries when '+'"columns" is an 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n=t.length>0?t[0].length:0;if(e=Ht(e)?mt(n):Wt(e),n>0&&n!==e.size())throw new Error('"colNames" must have the same length as each '+"row array");return r(t,0,e)},Jt.dfFromMatrixWithHeader=function(t){if(!Array.isArray(t))throw new Error('"matrix" must be an array');if(0===t.length)throw new Error('"matrix" must not have length 0');var e=Wt(t[0]);if(t.length>1&&e.size()!==t[1].length)throw new Error("header row must have the same length as other "+"row arrays");return r(t,1,e)},Jt.unpack=function(t){if(t.type===Gt.type)return n(t);if(t.type===te.type){var e=n(t.names),r=t.cols.map(function(t){return n(t)});return Jt.df(r,e)}throw new Error('"obj" has unrecognized type: '+t.type)},Jt.vCat=function(){for(var t=arguments.length,e=st(t),r=null,n=0,i=0;t>i;i++){var o=arguments[i];if(!Ht(o)&&null!==o&&o.type===te.type)throw new Error("cannot pass data frame arguments to jd.vCat");var u=Bt(o);null===r&&"object"!==u.dtype&&(r=u.dtype),n+=u.size(),e[i]=u}r=null===r?"object":r;var 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r=ft(this.values,t.values,null,m);return at(r,"boolean")},Gt.gt=function(t){t=Bt(t,this.dtype);var e=Dt(this.size(),t.size());if(this.dtype!==t.dtype)return Jt.repNa(e,"boolean");var r=ft(this.values,t.values,null,y);return at(r,"boolean")},Gt.lte=function(t){return this.lt(t).or(this.eq(t))},Gt.gte=function(t){return this.gt(t).or(this.eq(t))},Gt.between=function(t,e,r){throw new Error("unimplemented method (TODO)")},Gt.equals=function(t,e){if(ut(t)||t.type!==Gt.type||this.size()!==t.size()||this.dtype!==t.dtype)return!1;if(this===t)return!0;var r=p;"number"===this.dtype?r=Ht(e)?g:function(t,r){return Number.isNaN(t)&&Number.isNaN(r)||Math.abs(t-r)<=e}:"object"===this.dtype&&(r=d);for(var n=this.values,i=t.values,o=0;o<n.length;o++)if(!r(n[o],i[o]))return!1;return!0},Gt.min=function(t){var e=this.idxMin(t);return Number.isNaN(e)?se[this.dtype]:this.values[e]},Gt.max=function(t){var e=this.idxMax(t);return Number.isNaN(e)?se[this.dtype]:this.values[e]},Gt.cuMin=function(t){Ht(t)&&(t=!0);var e=t?pt(this.values,b):pt(this.values,se[this.dtype],b);return at(e,this.dtype)},Gt.cuMax=function(t){Ht(t)&&(t=!0);var e=t?pt(this.values,w):pt(this.values,se[this.dtype],w);return at(e,this.dtype)},Gt.idxMin=function(t){Ht(t)&&(t=!0);for(var e=this.values,r=NaN,n=null,i=0;i<e.length;i++){var o=e[i];if(ut(o)){if(!t)return NaN}else(Ct(o,n)<0||Number.isNaN(r))&&(n=o,r=i)}return r},Gt.idxMax=function(t){Ht(t)&&(t=!0);for(var e=this.values,r=NaN,n=null,i=0;i<e.length;i++){var o=e[i];if(ut(o)){if(!t)return NaN}else(Ct(o,n)>0||Number.isNaN(r))&&(n=o,r=i)}return r},Gt.pMin=function(t){t=Bt(t,this.dtype),Vt(t,this.dtype);var e=ft(this.values,t.values,se[this.dtype],b);return at(e,this.dtype)},Gt.pMax=function(t){t=Bt(t,this.dtype),Vt(t,this.dtype);var e=ft(this.values,t.values,se[this.dtype],w);return at(e,this.dtype)},Gt.clip=function(t,e){t=Bt(t,this.dtype),e=Bt(e,this.dtype),Vt(t,this.dtype),Vt(e,this.dtype);var r=vt([this.values,t.values,e.values],_);return at(r,this.dtype)},Gt.rank=function(){throw new Error("unimplemented method (TODO)")},Gt.contains=function(t){qt(this,"object"),t=Ft(t);var e=bt(t);if(e!==this.dtype&&null!==e)throw new Error('"value" does not match the dtype of this vector');return null!==this._getIndex().lookupKey([t])},Gt.isIn=function(t){return qt(this,"object"),t=Bt(t,this.dtype),Vt(t,this.dtype),t._getIndex().has([this])},Gt.valueCounts=function(){qt(this,"object");var t=this._getIndex().valueCounts(),e=Jt.df([t.vectors[0],t.counts],["value","count"]);return e.sort(["count","value"],[!1,!0])},Gt.unique=function(){return qt(this,"object"),this._getIndex().unique()[0]},Gt.nUnique=function(){return qt(this,"object"),this._getIndex().size},Gt.duplicated=function(t){return qt(this,"object"),this._getIndex().duplicated(t)},Gt.replace=function(){throw new 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i=this.s(null,n.ex()),o=this.s(null,n);Lt(o);var u=o._getIndex(),s=o.unique();It(e,"func"),Ht(r)||(r=Bt(r,"string"),"string"!==r.dtype&&(r=r.toDtype("string")));for(var a=s.nRow(),l=st(a),c=-1,h=0,f=0;a>f;f++){var v=s.s(f),p=u.lookup(s._cols,f),d=i.s(p),m=e(d,v);if(!Ht(m)){var y,g;if(null===m?(y=1,g=[v,m]):m.type===te.type?(y=m.nCol(),g=[v,m]):m.type===Gt.type?(y=m.size(),g=[v].concat(m.values)):Array.isArray(m)?(y=m.length,g=[v].concat(m)):(y=1,g=[v,m]),c===-1){if(c=y,!Ht(r)&&y!==r.size())throw new Error('length of "colNames" must match implied number '+'of columns returned by "func"')}else if(y!==c)throw new Error("inconsistent implied column counts returned from "+'"func": '+c+", ",+y);l[h]=Jt._colCatArray(g),h++}}if(0===h)return s.s([]);l.length!==h&&(l.length=h);var b=Jt._rowCatArray(l);if(!Ht(r)){var w=b.names();w=w.sMod(Jt.rng(n.size()),r),b=b.setNames(w)}return b},te.transpose=function(t,e){if(0===this.nRow())return Jt.df([]);if(t=Ht(t)?null:t,null!==t&&!Pt(t))throw new 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n=J(t,this._names,this._dtypesVector()),i=Jt.seq(this.nCol()).s(Jt.ex(n));if(0===i.size())throw new Error('"idVars" must not select all columns in the data frame');yt(n);var o=this.mapCols(n,function(t){return Jt.rep(t,i.size())}),u=Jt.repEach(this.names().s(i),this.nRow()),s=Jt.vCat.apply(Jt,this.s(null,i).colArray());return Jt.colCat(o,Jt.df([u,s],[e,r]))},te.pivot=function(t,e,r){r=Ht(r)?{}:r,Tt(r,["idVars","aggFunc","fillValue"]);var n=r.aggFunc,i=r.fillValue,o=nt(t,this._names),u=nt(e,this._names);if(o===u)throw new Error('"pivotCol" and "valueCol" must be different');var s;if(Ht(r.idVars)?s=Jt.seq(this.nCol()).s(Jt.ex([o,u])):(s=J(r.idVars,this._names,this._dtypesVector()),null===s&&(s=Jt.seq(this.nCol())),yt(s)),s.contains(o)||s.contains(u))throw new Error('"idVars" must not include pivotCol or valueCol');if(0===s.size())throw new Error("one or more columns must be selected as id columns");var a=Jt.df([this.c(o).unique().sort()],["variable"]),l=Jt.vCat(s,o,u),c=this.s(null,l),h=c.groupApply(Jt.rng(0,-2),function(t){t=t.setNames(["variable","value"]),Ht(n)||(t=t.groupApply("variable",function(t){return n(t.c(0))},"value"));var e=a.join(t,"left");if(e.nRow()!==a.nRow())throw new Error('must provide "aggFunc" when aggregation is required');return Ht(i)?e.c("value"):e.c("value").replaceNa(i)},a.c("variable"));return h};var ze=Jt.vector(["by","leftBy","rightBy","leftSuffix","rightSuffix","indicator"]);te.join=function(t,e,r){if(Ht(t)||null===t||t.type!==te.type)throw new Error('"other" must be a data frame');var n=!1,i="_x",o="_y",u=!1,s=!1;switch(e){case"inner":break;case"left":u=!0;break;case"right":s=!0;break;case"outer":u=!0,s=!0;break;default:throw new Error('"how" must be one of the following strings: '+'"inner", "left", "right", "outer"')}Ht(r)||(Tt(r,ze),Ht(r.indicator)||(n=r.indicator),Ht(r.leftSuffix)||(i=r.leftSuffix),Ht(r.rightSuffix)||(o=r.rightSuffix));var a=Y(this,t,r),l=a.left,c=a.right,h=this.s(null,l),f=this.s(null,l.ex()),v=t.s(null,c),p=t.s(null,c.ex());if(h.dtypes().c("dtype").contains("object")||v.dtypes().c("dtype").contains("object"))throw new Error('key columns must not have "object" dtype');if(!h.dtypes().c("dtype").equals(v.dtypes().c("dtype")))throw new Error("key columns must have matching dtypes on left "+"and right");var d,m,y=f.names().s(f.names().isIn(p.names())),g=f.names().map(function(t){return y.contains(t)?t+i:t}),b=p.names().map(function(t){return y.contains(t)?t+o:t}),w=Jt.vCat(h.names(),g,b,n?["_join"]:[]),_=v._getIndex(),x=h.nRow(),N=st(w.size());for(m=0;m<N.length;m++)N[m]=[];if(s)for(d=st(v.nRow()),m=0;m<d.length;m++)d[m]=!0;for(m=0;x>m;m++){var E=_.lookup(h._cols,m);if(null===E)u&&P(N,h,f,p,m,null,"leftOnly");else if("number"==typeof E)P(N,h,f,p,m,E,"both"),s&&(d[E]=!1);else for(var O=0;O<E.length;O++){var j=E[O];P(N,h,f,p,m,j,"both"),s&&(d[j]=!1)}}if(s){var 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r,n,i="number"===this.dtype,o="string"===this.dtype;switch(t.resolveMode){case Se.INT:if(!i)throw new Error("expected number vector for integer indexing "+'but got vector with dtype: "'+this.dtype+'"');for(r=0;r<this.values.length;r++)e.push(et(this.values[r],t.maxLen));break;case Se.COL:if(i)for(r=0;r<this.values.length;r++)e.push(et(this.values[r],t.maxLen));else{if(!o)throw new Error("expected number or string vector for column "+'indexing but got vector with dtype: "'+this.dtype+'"');for(r=0;r<this.values.length;r++){var u=this.values[r];n=t.index.lookupKey([u]),rt(n,u,t,e)}}break;case Se.KEY:if(1!==t.index.arity)throw new Error("unimplemented case (TODO)");var s=t.index.initVectors[0].dtype;if(this.dtype!==s)throw new Error('expected "'+s+'" vector for key '+'lookup but got vector with dtype: "'+this.dtype+'"');var a=[this];for(r=0;r<this.values.length;r++)n=t.index.lookup(a,r),rt(n,this.values[r],t,e);break;default:throw new Error("Unrecognized RESOLVE_MODE: 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 //# sourceMappingURL=jsdataframe-min.map

package.json

 {
   "name": "jsdataframe",
-  "version": "0.1.1",
+  "version": "0.2.0",
   "description": "a data frame library inspired by R and Python Pandas",
@@ -5,0 +5,0 @@ "main": "jsdataframe.js",

README.md

@@ -7,3 +7,4 @@ # **jsdataframe**
 methods, subset selection/modification, sorting, grouped
-split-apply-combine operations, database-style joins, and more.
+split-apply-combine operations, database-style joins, reshaping/pivoting,
+JSON serialization, and more.
 It is hoped that users of R and Python Pandas will find the concepts
@@ -10,0 +11,0 @@ in jsdataframe quite familiar.

New alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Fixed alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

263460

5.45%

Lines of code

4141

4.47%

Number of lines in readme file

15

7.14%

No dependency changes