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Fil
Vocateur.
Workspace
Fork
Published
2 collections
By
Fil
Edited
Apr 23, 2022
Fork of
Spherical Heatmap
•
2 forks
8 stars
Insert cell
Insert cell
mapfill
(
d
=>
color
(
interpolate
(
d
,
sources
)
)
,
d3
.
geoEqualEarth
(
)
,
{
N
:
10000
,
graticule
:
land
}
)
Insert cell
Insert cell
sigma
=
0.15
Insert cell
color
=
d3
.
scaleSequential
(
d3
.
interpolatePRGn
)
.
domain
(
[
-
1
,
1
]
)
Insert cell
function
interpolate
(
p
,
sources
)
{
let
value
=
0
,
weight
=
0
;
sources
.
forEach
(
q
=>
{
const
k
=
kernel
(
p
,
q
)
;
value
+=
k
*
q
[
2
]
;
weight
+=
k
;
}
)
;
return
value
/
weight
;
}
Insert cell
function
kernel
(
p
,
q
)
{
return
Math
.
exp
(
-
Math
.
pow
(
d3
.
geoDistance
(
p
,
q
)
/
sigma
,
2
)
)
;
}
Insert cell
sources
=
Array
.
from
(
{
length
:
500
}
,
(
)
=>
{
const
lon
=
360
*
(
Math
.
random
(
)
-
0.5
)
,
lat
=
90
*
(
Math
.
random
(
)
-
Math
.
random
(
)
)
,
t
=
(
d3
.
geoContains
(
land
,
[
lon
,
lat
]
)
?
1
:
-
1
)
*
(
0.3
+
Math
.
random
(
)
)
;
return
[
lon
,
lat
,
t
]
;
}
)
Insert cell
import
{
mapfill
}
from
"@fil/mapfill"
Insert cell
d3
=
require
(
"d3@7"
)
Insert cell
land
=
d3
.
json
(
"https://unpkg.com/visionscarto-world-atlas@0.0.6/world/110m_land.geojson"
)
Insert cell
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sigma
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color
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interpolate
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kernel
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sources
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d3
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land
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