nv . models . multiBarTimeSeries = function ( ) {
"use strict" ;
//============================================================
// Public Variables with Default Settings
//------------------------------------------------------------
var margin = { top : 0 , right : 0 , bottom : 0 , left : 0 }
, width = 960
, height = 500
, x = d3 . time . scale ( )
, y = d3 . scale . linear ( )
, id = Math . floor ( Math . random ( ) * 10000 ) //Create semi-unique ID in case user doesn't select one
, getX = function ( d ) { return d . x }
, getY = function ( d ) { return d . y }
, forceY = [ 0 ] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
, clipEdge = true
, stacked = false
, color = nv . utils . defaultColor ( )
, delay = 1200
, xDomain
, yDomain
, xRange
, yRange
, dispatch = d3 . dispatch ( 'chartClick' , 'elementClick' , 'elementDblClick' , 'elementMouseover' , 'elementMouseout' )
;
//============================================================
//============================================================
// Private Variables
//------------------------------------------------------------
var x0 , y0 //used to store previous scales
;
//============================================================
function chart ( selection ) {
selection . each ( function ( data ) {
var availableWidth = width - margin . left - margin . right ,
availableHeight = height - margin . top - margin . bottom ,
container = d3 . select ( this ) ;
if ( stacked )
data = d3 . layout . stack ( )
. offset ( 'zero' )
. values ( function ( d ) { return d . values } )
. y ( getY )
( data ) ;
//add series index to each data point for reference
data = data . map ( function ( series , i ) {
series . values = series . values . map ( function ( point ) {
point . series = i ;
return point ;
} ) ;
return series ;
} ) ;
//------------------------------------------------------------
// Setup Scales
// remap and flatten the data for use in calculating the scales' domains
var seriesData = ( xDomain && yDomain ) ? [ ] : // if we know xDomain and yDomain, no need to calculate
data . map ( function ( d ) {
return d . values . map ( function ( d , i ) {
return { x : getX ( d , i ) , y : getY ( d , i ) , y0 : d . y0 }
} )
} ) ;
x . domain ( xDomain || d3 . extent ( d3 . merge ( seriesData ) . map ( function ( d ) { return d . x } ) ) )
. range ( xRange || [ 0 , availableWidth ] ) ;
y . domain ( yDomain || d3 . extent ( d3 . merge ( seriesData ) . map ( function ( d ) { return d . y + ( stacked ? d . y0 : 0 ) } ) . concat ( forceY ) ) )
. range ( yRange || [ availableHeight , 0 ] ) ;
// If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
if ( x . domain ( ) [ 0 ] === x . domain ( ) [ 1 ] )
x . domain ( ) [ 0 ] ?
x . domain ( [ x . domain ( ) [ 0 ] - x . domain ( ) [ 0 ] * 0.01 , x . domain ( ) [ 1 ] + x . domain ( ) [ 1 ] * 0.01 ] )
: x . domain ( [ - 1 , 1 ] ) ;
if ( y . domain ( ) [ 0 ] === y . domain ( ) [ 1 ] )
y . domain ( ) [ 0 ] ?
y . domain ( [ y . domain ( ) [ 0 ] + y . domain ( ) [ 0 ] * 0.01 , y . domain ( ) [ 1 ] - y . domain ( ) [ 1 ] * 0.01 ] )
: y . domain ( [ - 1 , 1 ] ) ;
x0 = x0 || x ;
y0 = y0 || y ;
//------------------------------------------------------------
//------------------------------------------------------------
// Setup containers and skeleton of chart
var wrap = container . selectAll ( 'g.nv-wrap.nv-multibar' ) . data ( [ data ] ) ;
var wrapEnter = wrap . enter ( ) . append ( 'g' ) . attr ( 'class' , 'nvd3 nv-wrap nv-multibar' ) ;
var defsEnter = wrapEnter . append ( 'defs' ) ;
var gEnter = wrapEnter . append ( 'g' ) ;
var g = wrap . select ( 'g' )
gEnter . append ( 'g' ) . attr ( 'class' , 'nv-groups' ) ;
wrap . attr ( 'transform' , 'translate(' + margin . left + ',' + margin . top + ')' ) ;
//------------------------------------------------------------
defsEnter . append ( 'clipPath' )
. attr ( 'id' , 'nv-edge-clip-' + id )
. append ( 'rect' ) ;
wrap . select ( '#nv-edge-clip-' + id + ' rect' )
. attr ( 'width' , availableWidth )
. attr ( 'height' , availableHeight ) ;
g . attr ( 'clip-path' , clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '' ) ;
var groups = wrap . select ( '.nv-groups' ) . selectAll ( '.nv-group' )
. data ( function ( d ) { return d } , function ( d ) { return d . key } ) ;
groups . enter ( ) . append ( 'g' )
. style ( 'stroke-opacity' , 1e-6 )
. style ( 'fill-opacity' , 1e-6 ) ;
d3 . transition ( groups . exit ( ) )
//.style('stroke-opacity', 1e-6)
//.style('fill-opacity', 1e-6)
. selectAll ( 'rect.nv-bar' )
. delay ( function ( d , i ) { return i * delay / data [ 0 ] . values . length } )
. attr ( 'y' , function ( d ) { return stacked ? y0 ( d . y0 ) : y0 ( 0 ) } )
. attr ( 'height' , 0 )
. remove ( ) ;
groups
. attr ( 'class' , function ( d , i ) { return 'nv-group nv-series-' + i } )
. classed ( 'hover' , function ( d ) { return d . hover } )
. style ( 'fill' , function ( d , i ) { return color ( d , i ) } )
. style ( 'stroke' , function ( d , i ) { return color ( d , i ) } ) ;
d3 . transition ( groups )
. style ( 'stroke-opacity' , 1 )
. style ( 'fill-opacity' , . 75 ) ;
var bars = groups . selectAll ( 'rect.nv-bar' )
. data ( function ( d ) { return d . values } ) ;
bars . exit ( ) . remove ( ) ;
var maxElements = 0 ;
for ( var ei = 0 ; ei < seriesData . length ; ei += 1 ) {
maxElements = Math . max ( seriesData [ ei ] . length , maxElements ) ;
}
var bandWidth = ( availableWidth / maxElements ) - 0.1 ;
var barWidth = bandWidth / data . length ;
var barsEnter = bars . enter ( ) . append ( 'rect' )
. attr ( 'class' , function ( d , i ) { return getY ( d , i ) < 0 ? 'nv-bar negative' : 'nv-bar positive' } )
. attr ( 'x' , function ( d , i , j ) {
return stacked ? 0 : ( i * bandWidth ) + ( j * barWidth )
} )
. attr ( 'y' , function ( d ) { return y0 ( stacked ? d . y0 : 0 ) } )
. attr ( 'height' , 0 )
. attr ( 'width' , stacked ? bandWidth : barWidth ) ;
bars
. on ( 'mouseover' , function ( d , i ) { //TODO: figure out why j works above, but not here
d3 . select ( this ) . classed ( 'hover' , true ) ;
dispatch . elementMouseover ( {
value : getY ( d , i ) ,
point : d ,
series : data [ d . series ] ,
pos : [ x ( getX ( d , i ) ) + ( barWidth * ( stacked ? data . length / 2 : d . series + . 5 ) / data . length ) , y ( getY ( d , i ) + ( stacked ? d . y0 : 0 ) ) ] , // TODO: Figure out why the value appears to be shifted
pointIndex : i ,
seriesIndex : d . series ,
e : d3 . event
} ) ;
} )
. on ( 'mouseout' , function ( d , i ) {
d3 . select ( this ) . classed ( 'hover' , false ) ;
dispatch . elementMouseout ( {
value : getY ( d , i ) ,
point : d ,
series : data [ d . series ] ,
pointIndex : i ,
seriesIndex : d . series ,
e : d3 . event
} ) ;
} )
. on ( 'click' , function ( d , i ) {
dispatch . elementClick ( {
value : getY ( d , i ) ,
point : d ,
series : data [ d . series ] ,
pos : [ x ( getX ( d , i ) ) + ( barWidth * ( stacked ? data . length / 2 : d . series + . 5 ) / data . length ) , y ( getY ( d , i ) + ( stacked ? d . y0 : 0 ) ) ] , // TODO: Figure out why the value appears to be shifted
pointIndex : i ,
seriesIndex : d . series ,
e : d3 . event
} ) ;
d3 . event . stopPropagation ( ) ;
} )
. on ( 'dblclick' , function ( d , i ) {
dispatch . elementDblClick ( {
value : getY ( d , i ) ,
point : d ,
series : data [ d . series ] ,
pos : [ x ( getX ( d , i ) ) + ( barWidth * ( stacked ? data . length / 2 : d . series + . 5 ) / data . length ) , y ( getY ( d , i ) + ( stacked ? d . y0 : 0 ) ) ] , // TODO: Figure out why the value appears to be shifted
pointIndex : i ,
seriesIndex : d . series ,
e : d3 . event
} ) ;
d3 . event . stopPropagation ( ) ;
} ) ;
bars
. attr ( 'class' , function ( d , i ) { return getY ( d , i ) < 0 ? 'nv-bar negative' : 'nv-bar positive' } )
. attr ( 'transform' , function ( d , i ) { return 'translate(' + x ( getX ( d , i ) ) + ',0)' ; } )
if ( stacked )
d3 . transition ( bars )
. delay ( function ( d , i ) { return i * delay / data [ 0 ] . values . length } )
. attr ( 'y' , function ( d , i ) {
return y ( getY ( d , i ) + ( stacked ? d . y0 : 0 ) ) ;
} )
. attr ( 'height' , function ( d , i ) {
return Math . abs ( y ( d . y + ( stacked ? d . y0 : 0 ) ) - y ( ( stacked ? d . y0 : 0 ) ) )
} )
. each ( 'end' , function ( ) {
d3 . transition ( d3 . select ( this ) )
. attr ( 'x' , function ( d , i ) {
return stacked ? 0 : ( i * bandWidth ) + ( j * barWidth )
} )
. attr ( 'width' , stacked ? bandWidth : barWidth ) ;
} )
else
d3 . transition ( bars )
. delay ( function ( d , i ) { return i * delay / data [ 0 ] . values . length } )
. attr ( 'x' , function ( d , i ) {
return d . series * barWidth
} )
. attr ( 'width' , barWidth )
. each ( 'end' , function ( ) {
d3 . transition ( d3 . select ( this ) )
. attr ( 'y' , function ( d , i ) {
return getY ( d , i ) < 0 ?
y ( 0 ) :
y ( getY ( d , i ) )
} )
. attr ( 'height' , function ( d , i ) {
return Math . abs ( y ( getY ( d , i ) ) - y ( 0 ) )
} ) ;
} )
//store old scales for use in transitions on update
x0 = x . copy ( ) ;
y0 = y . copy ( ) ;
} ) ;
return chart ;
}
//============================================================
// Expose Public Variables
//------------------------------------------------------------
chart . dispatch = dispatch ;
chart . options = nv . utils . optionsFunc . bind ( chart ) ;
chart . x = function ( _ ) {
if ( ! arguments . length ) return getX ;
getX = _ ;
return chart ;
} ;
chart . y = function ( _ ) {
if ( ! arguments . length ) return getY ;
getY = _ ;
return chart ;
} ;
chart . margin = function ( _ ) {
if ( ! arguments . length ) return margin ;
margin . top = typeof _ . top != 'undefined' ? _ . top : margin . top ;
margin . right = typeof _ . right != 'undefined' ? _ . right : margin . right ;
margin . bottom = typeof _ . bottom != 'undefined' ? _ . bottom : margin . bottom ;
margin . left = typeof _ . left != 'undefined' ? _ . left : margin . left ;
return chart ;
} ;
chart . width = function ( _ ) {
if ( ! arguments . length ) return width ;
width = _ ;
return chart ;
} ;
chart . height = function ( _ ) {
if ( ! arguments . length ) return height ;
height = _ ;
return chart ;
} ;
chart . xScale = function ( _ ) {
if ( ! arguments . length ) return x ;
x = _ ;
return chart ;
} ;
chart . yScale = function ( _ ) {
if ( ! arguments . length ) return y ;
y = _ ;
return chart ;
} ;
chart . xDomain = function ( _ ) {
if ( ! arguments . length ) return xDomain ;
xDomain = _ ;
return chart ;
} ;
chart . yDomain = function ( _ ) {
if ( ! arguments . length ) return yDomain ;
yDomain = _ ;
return chart ;
} ;
chart . xRange = function ( _ ) {
if ( ! arguments . length ) return xRange ;
xRange = _ ;
return chart ;
} ;
chart . yRange = function ( _ ) {
if ( ! arguments . length ) return yRange ;
yRange = _ ;
return chart ;
} ;
chart . forceY = function ( _ ) {
if ( ! arguments . length ) return forceY ;
forceY = _ ;
return chart ;
} ;
chart . stacked = function ( _ ) {
if ( ! arguments . length ) return stacked ;
stacked = _ ;
return chart ;
} ;
chart . clipEdge = function ( _ ) {
if ( ! arguments . length ) return clipEdge ;
clipEdge = _ ;
return chart ;
} ;
chart . color = function ( _ ) {
if ( ! arguments . length ) return color ;
color = nv . utils . getColor ( _ ) ;
return chart ;
} ;
chart . id = function ( _ ) {
if ( ! arguments . length ) return id ;
id = _ ;
return chart ;
} ;
chart . delay = function ( _ ) {
if ( ! arguments . length ) return delay ;
delay = _ ;
return chart ;
} ;
//============================================================
return chart ;
}