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D3
Bring your data to life.
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Published unlisted
d3-array
By
Fil
Edited
Feb 5, 2021
Importers
Insert cell
Insert cell
fcumsum
(
[
1
,
1e-14
,
-
1
]
)
Insert cell
function
fcumsum
(
values
,
valueof
)
{
const
adder
=
new
d3
.
Adder
(
)
;
let
index
=
-
1
;
return
Float64Array
.
from
(
values
,
valueof
===
undefined
?
v
=>
adder
.
add
(
+
v
||
0
)
:
v
=>
adder
.
add
(
+
valueof
(
v
,
++
index
,
values
)
||
0
)
)
;
}
Insert cell
fcumsum
(
[
1
,
2
,
3
]
)
Insert cell
fcumsum
(
data
,
d
=>
d
.
value
)
Insert cell
d3
.
cumsum
(
data
,
d
=>
d
.
value
)
Insert cell
Insert cell
fcumsum
(
[
"1"
,
null
,
0.1
,
"0.1"
,
0.1
,
"a"
,
undefined
,
"5e-1"
]
)
// 1…1.8
Insert cell
d3
.
cumsum
(
[
"1"
,
null
,
0.1
,
"0.1"
,
0.1
,
"a"
,
undefined
,
"5e-1"
]
)
Insert cell
data
=
[
{
value
:
18.7
}
,
{
value
:
14.3
}
,
{
value
:
16.4
}
,
{
value
:
17.3
}
,
{
value
:
15.2
}
,
{
value
:
10.4
}
,
{
value
:
10.4
}
,
{
value
:
14.7
}
,
{
value
:
15.5
}
,
{
value
:
15.2
}
,
{
value
:
13.3
}
,
{
value
:
19.2
}
]
Insert cell
// d3.fcumsum was introduced in d3-array@2.x
d3
=
require
(
"d3-array@2"
)
// ^next
Insert cell
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