What is the' row =>' in 'd3fc'?
0
This is from d3fc.....module..
What is the' row =>' ?
Is this d3 function?? but i can't find meaning of this..
in d3 offical ....d3fc offical.....site...
const lineSeries = fc.seriesSvgLine()
.mainValue(d => d.close)
.crossValue(d => d.date);
const chart = fc.chartSvgCartesian(
d3.scaleTime(),
d3.scaleLinear()
)
.yOrient('left')
.plotArea(lineSeries);
const xExtent = fc.extentDate()
.accessors([d => d.date]);
const yExtent = fc.extentLinear()
.accessors([d => d.high, d => d.low]);
const parseDate = d3.timeParse("%d-%b-%y");
d3.csv('data.csv',
row => ({
open: row.Open,
close: row.Close,
high: row.High,
low: row.Low,
date: parseDate(row.Date)
})).then(data => {
chart.xDomain(xExtent(data))
.yDomain(yExtent(data));
d3.select('#chart-element')
.datum(data)
.call(chart);
});
'row =>' is something like 'function(d)'?
'row' is 'd'
'function' is '=>'?
javascript
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
asked Nov 24 '18 at 18:28
HARUHARU
11
add a comment |
0
This is from d3fc.....module..
What is the' row =>' ?
Is this d3 function?? but i can't find meaning of this..
in d3 offical ....d3fc offical.....site...
const lineSeries = fc.seriesSvgLine()
.mainValue(d => d.close)
.crossValue(d => d.date);
const chart = fc.chartSvgCartesian(
d3.scaleTime(),
d3.scaleLinear()
)
.yOrient('left')
.plotArea(lineSeries);
const xExtent = fc.extentDate()
.accessors([d => d.date]);
const yExtent = fc.extentLinear()
.accessors([d => d.high, d => d.low]);
const parseDate = d3.timeParse("%d-%b-%y");
d3.csv('data.csv',
row => ({
open: row.Open,
close: row.Close,
high: row.High,
low: row.Low,
date: parseDate(row.Date)
})).then(data => {
chart.xDomain(xExtent(data))
.yDomain(yExtent(data));
d3.select('#chart-element')
.datum(data)
.call(chart);
});
'row =>' is something like 'function(d)'?
'row' is 'd'
'function' is '=>'?
javascript
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
asked Nov 24 '18 at 18:28
HARUHARU
11
3
JavaScript arrow function. Nothing specifically to do with d3.
– Pointy
Nov 24 '18 at 18:29
3
Possible duplicate of What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?
– kemicofa
Nov 24 '18 at 18:31
add a comment |
0
0
0
This is from d3fc.....module..
What is the' row =>' ?
Is this d3 function?? but i can't find meaning of this..
in d3 offical ....d3fc offical.....site...
const lineSeries = fc.seriesSvgLine()
.mainValue(d => d.close)
.crossValue(d => d.date);
const chart = fc.chartSvgCartesian(
d3.scaleTime(),
d3.scaleLinear()
)
.yOrient('left')
.plotArea(lineSeries);
const xExtent = fc.extentDate()
.accessors([d => d.date]);
const yExtent = fc.extentLinear()
.accessors([d => d.high, d => d.low]);
const parseDate = d3.timeParse("%d-%b-%y");
d3.csv('data.csv',
row => ({
open: row.Open,
close: row.Close,
high: row.High,
low: row.Low,
date: parseDate(row.Date)
})).then(data => {
chart.xDomain(xExtent(data))
.yDomain(yExtent(data));
d3.select('#chart-element')
.datum(data)
.call(chart);
});
'row =>' is something like 'function(d)'?
'row' is 'd'
'function' is '=>'?
javascript
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
asked Nov 24 '18 at 18:28
HARUHARU
11
This is from d3fc.....module..
What is the' row =>' ?
Is this d3 function?? but i can't find meaning of this..
in d3 offical ....d3fc offical.....site...
const lineSeries = fc.seriesSvgLine()
.mainValue(d => d.close)
.crossValue(d => d.date);
const chart = fc.chartSvgCartesian(
d3.scaleTime(),
d3.scaleLinear()
)
.yOrient('left')
.plotArea(lineSeries);
const xExtent = fc.extentDate()
.accessors([d => d.date]);
const yExtent = fc.extentLinear()
.accessors([d => d.high, d => d.low]);
const parseDate = d3.timeParse("%d-%b-%y");
d3.csv('data.csv',
row => ({
open: row.Open,
close: row.Close,
high: row.High,
low: row.Low,
date: parseDate(row.Date)
})).then(data => {
chart.xDomain(xExtent(data))
.yDomain(yExtent(data));
d3.select('#chart-element')
.datum(data)
.call(chart);
});
'row =>' is something like 'function(d)'?
'row' is 'd'
'function' is '=>'?
javascript
javascript
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
asked Nov 24 '18 at 18:28
HARUHARU
11
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
asked Nov 24 '18 at 18:28
HARUHARU
11
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
edited Nov 24 '18 at 19:04
nyedidikeke
2,76442033
2,76442033
asked Nov 24 '18 at 18:28
HARUHARU
11
asked Nov 24 '18 at 18:28
HARUHARU
11
asked Nov 24 '18 at 18:28
HARUHARU
11
11
3
JavaScript arrow function. Nothing specifically to do with d3.
– Pointy
Nov 24 '18 at 18:29
3
Possible duplicate of What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?
– kemicofa
Nov 24 '18 at 18:31
add a comment |
3
JavaScript arrow function. Nothing specifically to do with d3.
– Pointy
Nov 24 '18 at 18:29
3
Possible duplicate of What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?
– kemicofa
Nov 24 '18 at 18:31
3
3
JavaScript arrow function. Nothing specifically to do with d3.
– Pointy
Nov 24 '18 at 18:29
JavaScript arrow function. Nothing specifically to do with d3.
– Pointy
Nov 24 '18 at 18:29
3
3
Possible duplicate of What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?
– kemicofa
Nov 24 '18 at 18:31
Possible duplicate of What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?
– kemicofa
Nov 24 '18 at 18:31
add a comment |
0
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3
JavaScript arrow function. Nothing specifically to do with d3.
– Pointy
Nov 24 '18 at 18:29
3
Possible duplicate of What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?
– kemicofa
Nov 24 '18 at 18:31