Openlayers - Resolution range for each tileLayer zoom level
0
I'm creating a scale line with marks, where should be visible each level range by resolution.
So. Defined resolutions are something like 'perfect middle'. But view are changing a zoom level between those resolutions. So maybe somebody know, how to calculate it?
openlayers openlayers-3 openlayers-5
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
add a comment |
0
I'm creating a scale line with marks, where should be visible each level range by resolution.
So. Defined resolutions are something like 'perfect middle'. But view are changing a zoom level between those resolutions. So maybe somebody know, how to calculate it?
openlayers openlayers-3 openlayers-5
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
It's not documented anywhere but OpenLayers always seems to choose the tile grid resolution closest to the view resolution, and at the exact midway point will choose the lower tile grid resolution. Callingsource.getTileGrid().getZForResolution(view.getResolution());will give the tile zoom level andsource.getTileGrid().getResolution(source.getTileGrid().getZForResolution(view.getResolution()));the original resolution of the tiles at that level. Those calls will not be reliable if you are reprojecting a layer.
– Mike
Nov 13 '18 at 16:38
add a comment |
0
0
0
I'm creating a scale line with marks, where should be visible each level range by resolution.
So. Defined resolutions are something like 'perfect middle'. But view are changing a zoom level between those resolutions. So maybe somebody know, how to calculate it?
openlayers openlayers-3 openlayers-5
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
I'm creating a scale line with marks, where should be visible each level range by resolution.
So. Defined resolutions are something like 'perfect middle'. But view are changing a zoom level between those resolutions. So maybe somebody know, how to calculate it?
openlayers openlayers-3 openlayers-5
openlayers openlayers-3 openlayers-5
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
asked Nov 13 '18 at 15:01
Aigars ZeizaAigars Zeiza
415
415
It's not documented anywhere but OpenLayers always seems to choose the tile grid resolution closest to the view resolution, and at the exact midway point will choose the lower tile grid resolution. Callingsource.getTileGrid().getZForResolution(view.getResolution());will give the tile zoom level andsource.getTileGrid().getResolution(source.getTileGrid().getZForResolution(view.getResolution()));the original resolution of the tiles at that level. Those calls will not be reliable if you are reprojecting a layer.
– Mike
Nov 13 '18 at 16:38
add a comment |
It's not documented anywhere but OpenLayers always seems to choose the tile grid resolution closest to the view resolution, and at the exact midway point will choose the lower tile grid resolution. Callingsource.getTileGrid().getZForResolution(view.getResolution());will give the tile zoom level andsource.getTileGrid().getResolution(source.getTileGrid().getZForResolution(view.getResolution()));the original resolution of the tiles at that level. Those calls will not be reliable if you are reprojecting a layer.
– Mike
Nov 13 '18 at 16:38
It's not documented anywhere but OpenLayers always seems to choose the tile grid resolution closest to the view resolution, and at the exact midway point will choose the lower tile grid resolution. Calling
source.getTileGrid().getZForResolution(view.getResolution()); will give the tile zoom level and source.getTileGrid().getResolution(source.getTileGrid().getZForResolution(view.getResolution())); the original resolution of the tiles at that level. Those calls will not be reliable if you are reprojecting a layer.– Mike
Nov 13 '18 at 16:38
It's not documented anywhere but OpenLayers always seems to choose the tile grid resolution closest to the view resolution, and at the exact midway point will choose the lower tile grid resolution. Calling
source.getTileGrid().getZForResolution(view.getResolution()); will give the tile zoom level and source.getTileGrid().getResolution(source.getTileGrid().getZForResolution(view.getResolution())); the original resolution of the tiles at that level. Those calls will not be reliable if you are reprojecting a layer.– Mike
Nov 13 '18 at 16:38
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53283844%2fopenlayers-resolution-range-for-each-tilelayer-zoom-level%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53283844%2fopenlayers-resolution-range-for-each-tilelayer-zoom-level%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
It's not documented anywhere but OpenLayers always seems to choose the tile grid resolution closest to the view resolution, and at the exact midway point will choose the lower tile grid resolution. Calling
source.getTileGrid().getZForResolution(view.getResolution());will give the tile zoom level andsource.getTileGrid().getResolution(source.getTileGrid().getZForResolution(view.getResolution()));the original resolution of the tiles at that level. Those calls will not be reliable if you are reprojecting a layer.– Mike
Nov 13 '18 at 16:38