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Joshua Byrd
Code and stories for ABC News and other experiments online
Workspace
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Public
By
Joshua Byrd
Edited
May 16, 2023
ISC
Fork of
GeoTIFF Contours
1
Insert cell
Insert cell
chart
=
html
`<svg style="width: 100%; height: auto; display: block;" viewBox="0 0 ${
n
} ${
m
}">
${
Array
.
from
(
contours
(
values
)
,
d
=>
svg
`<path d="${
path
(
d
)
}" fill="${
color
(
d
.
value
)
}" />`
)
}
</svg>`
Insert cell
path
=
d3
.
geoPath
(
)
Insert cell
contours
=
d3
.
contours
(
)
.
size
(
[
n
,
m
]
)
.
smooth
(
false
)
.
thresholds
(
8
)
Insert cell
color
=
d3
.
scaleSequential
(
d3
.
extent
(
values
)
,
d3
.
interpolateMagma
)
Insert cell
image
=
tiff
.
getImage
(
)
Insert cell
values
=
(
await
image
.
readRasters
(
)
)
[
0
]
Insert cell
n
=
image
.
getWidth
(
)
Insert cell
m
=
image
.
getHeight
(
)
Insert cell
tiff
=
FileAttachment
(
"sfctmp.tiff"
)
.
arrayBuffer
(
)
.
then
(
buffer
=>
GeoTIFF
.
fromArrayBuffer
(
buffer
)
)
Insert cell
GeoTIFF
=
require
(
"geotiff@1.0.0-beta.13"
)
Insert cell
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path
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contours
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color
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image
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values
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n
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m
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tiff
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GeoTIFF
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