javascript map polylines, set opacity to zero if criteria doesn't match
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I have the following code that currently draws polylines of across gps coordinates:
function update() {
// if not today, then stick data in corner and hide
feature.attr("transform",
function(d) {
if (d.day == timerCount) {
d3.select("#monthLabel").text("Date: " + d.Date);
lineArray1 = latlongs.slice(d.S1,d.S2);
var polylineArray = [
L.polyline(lineArray1, {color: 'red', opacity: 1}),
]
var polylines = L.layerGroup(polylineArray);
mappedlines = polylines.addTo(map);}});
What I want to do is use another function that will hide the polyline if a date has passed by (currently it leaves all poylines on the map).
I thought using something like:
polylineArray.style("opacity", function(d) {
if (d.day == timerCount) {
return 1;
} else {
return 0;
}
});
Would work but it doesn't, any way to set the opacity to zero or delete the lines if day doesn't match timerCount?
javascript dictionary d3.js leaflet
asked Nov 22 at 6:27
Andy
255
add a comment |
up vote
0
down vote
favorite
I have the following code that currently draws polylines of across gps coordinates:
function update() {
// if not today, then stick data in corner and hide
feature.attr("transform",
function(d) {
if (d.day == timerCount) {
d3.select("#monthLabel").text("Date: " + d.Date);
lineArray1 = latlongs.slice(d.S1,d.S2);
var polylineArray = [
L.polyline(lineArray1, {color: 'red', opacity: 1}),
]
var polylines = L.layerGroup(polylineArray);
mappedlines = polylines.addTo(map);}});
What I want to do is use another function that will hide the polyline if a date has passed by (currently it leaves all poylines on the map).
I thought using something like:
polylineArray.style("opacity", function(d) {
if (d.day == timerCount) {
return 1;
} else {
return 0;
}
});
Would work but it doesn't, any way to set the opacity to zero or delete the lines if day doesn't match timerCount?
javascript dictionary d3.js leaflet
asked Nov 22 at 6:27
Andy
255
The opacity function looks good but it seems you're applying it to a plainArray, it should be to a d3Selection.
– Zim
Nov 22 at 7:40
How would I make the array into a d3 selection?
– Andy
Nov 22 at 21:54
What isL.polyline?
– Zim
Nov 23 at 8:22
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have the following code that currently draws polylines of across gps coordinates:
function update() {
// if not today, then stick data in corner and hide
feature.attr("transform",
function(d) {
if (d.day == timerCount) {
d3.select("#monthLabel").text("Date: " + d.Date);
lineArray1 = latlongs.slice(d.S1,d.S2);
var polylineArray = [
L.polyline(lineArray1, {color: 'red', opacity: 1}),
]
var polylines = L.layerGroup(polylineArray);
mappedlines = polylines.addTo(map);}});
What I want to do is use another function that will hide the polyline if a date has passed by (currently it leaves all poylines on the map).
I thought using something like:
polylineArray.style("opacity", function(d) {
if (d.day == timerCount) {
return 1;
} else {
return 0;
}
});
Would work but it doesn't, any way to set the opacity to zero or delete the lines if day doesn't match timerCount?
javascript dictionary d3.js leaflet
asked Nov 22 at 6:27
Andy
255
I have the following code that currently draws polylines of across gps coordinates:
function update() {
// if not today, then stick data in corner and hide
feature.attr("transform",
function(d) {
if (d.day == timerCount) {
d3.select("#monthLabel").text("Date: " + d.Date);
lineArray1 = latlongs.slice(d.S1,d.S2);
var polylineArray = [
L.polyline(lineArray1, {color: 'red', opacity: 1}),
]
var polylines = L.layerGroup(polylineArray);
mappedlines = polylines.addTo(map);}});
What I want to do is use another function that will hide the polyline if a date has passed by (currently it leaves all poylines on the map).
I thought using something like:
polylineArray.style("opacity", function(d) {
if (d.day == timerCount) {
return 1;
} else {
return 0;
}
});
Would work but it doesn't, any way to set the opacity to zero or delete the lines if day doesn't match timerCount?
javascript dictionary d3.js leaflet
javascript dictionary d3.js leaflet
asked Nov 22 at 6:27
Andy
255
asked Nov 22 at 6:27
Andy
255
asked Nov 22 at 6:27
Andy
255
asked Nov 22 at 6:27
Andy
255
asked Nov 22 at 6:27
Andy
255
255
The opacity function looks good but it seems you're applying it to a plainArray, it should be to a d3Selection.
– Zim
Nov 22 at 7:40
How would I make the array into a d3 selection?
– Andy
Nov 22 at 21:54
What isL.polyline?
– Zim
Nov 23 at 8:22
add a comment |
The opacity function looks good but it seems you're applying it to a plainArray, it should be to a d3Selection.
– Zim
Nov 22 at 7:40
How would I make the array into a d3 selection?
– Andy
Nov 22 at 21:54
What isL.polyline?
– Zim
Nov 23 at 8:22
The opacity function looks good but it seems you're applying it to a plain
Array, it should be to a d3 Selection.– Zim
Nov 22 at 7:40
The opacity function looks good but it seems you're applying it to a plain
Array, it should be to a d3 Selection.– Zim
Nov 22 at 7:40
How would I make the array into a d3 selection?
– Andy
Nov 22 at 21:54
How would I make the array into a d3 selection?
– Andy
Nov 22 at 21:54
What is
L.polyline ?– Zim
Nov 23 at 8:22
What is
L.polyline ?– Zim
Nov 23 at 8:22
add a comment |
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The opacity function looks good but it seems you're applying it to a plain
Array, it should be to a d3Selection.– Zim
Nov 22 at 7:40
How would I make the array into a d3 selection?
– Andy
Nov 22 at 21:54
What is
L.polyline?– Zim
Nov 23 at 8:22