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JohnGrayson
Esri Alum
since
07-04-2014
10-24-2024
418
Posts created
73
Kudos given
82
Solutions
238
Kudos received
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My Ideas
(0 Idea Submissions)Latest Contributions by JohnGrayson
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The SceneView rendering is already done via webgl. If you have a lot of data that you want to visualize in 3D your best solution is to use Scene Layers.
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01-25-2018
11:17 AM
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1051
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Have you tried just setting the definitionExpression on the FeatureLayer instead? It should allow you to retrieve the necessary subset of data without having to resort to loading the data yourself. It always helps to have a jsbin, codepen, or similar so we can all better see the issues.
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01-25-2018
11:06 AM
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- The new webgl rendering referenced above is only for 2D MapViews; see webgl-rendering - If you have a lot of 3D data, then please use Pro to publish your data as Scene Layers; that is what they're designed for.
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01-23-2018
03:26 PM
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Raul, I believe the new Draw functionality will not help with this second use case. We've done some related work in this area but I'm not sure if it will help for this task. Let me try a few things and I'll get back to you...
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12-12-2017
09:08 AM
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3235
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Raul, "...draw 3D Symbols" can apply to many different types of symbols, layers, and data. Do you have specific code showing an example of what you're trying to do that doesn't work so we can think about how we might accomplish the specific task? In the included screenshot it looks like you're pointing to a polyline being draped over the terrain which can be accomplished by using the elevationInfo.mode = "on-the-ground" property/setting of the layer (see FeatureLayer). You might also check out the new Draw functionality that might help with some of these tasks. Here's a modified sample using the SketchViewModel: https://codepen.io/john-grayson/pen/GyKwXW
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12-11-2017
10:30 AM
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3235
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Below is some code I pulled out of an old demo that does what you need. The task involves two steps. The first one is to augment the label nodes with a custom inner node (chartLabel) with custom attribute (date). The second step is to find them and add a 'click' event handler to those nodes AFTER they've been rendered. //
// GET CHART LABELS //
//
getChartLabels: function (store) {
// CHART LABELS //
return store.query().map(lang.hitch(this, function (item, itemIdx) {
var selectionClass = (itemIdx === 0) ? ".chartlabelselected" : "";
var labelNode = put(lang.replace("chartLabel span{0}[date='{1}']<", [selectionClass, item.monthDate.valueOf()]), item.text);
return {
text: has("ie") ? item.text : labelNode.outerHTML,
value: (itemIdx + 1)
};
}));
}
//
// CUSTOM AXIS LABEL BEHAVIOR //
//
aspect.after(this.monthlyChart, "render", lang.hitch(this, function (evt) {
// ALLOW USERS TO CLICK ON DATE CHART LABEL TO SET MAP TIME EXTENT //
query("chartLabel", this.monthlyChart.domNode).forEach(lang.hitch(this, function (node) {
node.innerHTML = node.innerHTML.replace(/ /g, " ");
on(node, "click", lang.hitch(this, function (evt) {
var dateValue = domAttr.get(node.firstChild, "date");
this.selectMonth(this.monthlyTotalsStore.get(dateValue));
}));
}));
}), true); I hope this helps.
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09-27-2017
08:53 AM
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1669
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Try using the Expand widget: Expand | API Reference | ArcGIS API for JavaScript 4.4 & Expand widget | ArcGIS API for JavaScript 4.4
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08-21-2017
05:31 PM
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The error seems to happen after you've gotten past the download part so it's hard to tell what is going on. Try debugging the app an add a breakpoint at the line that makes the 'getExtentForScale()' call; that might help you figure it out.
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08-08-2017
11:36 AM
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1714
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Bengi, below is the relevant code, and here's a modified version of the 'Add Shapefile' sample: Add Shapefile //
// STEP #1a - GET ZIPPED SHAPEFLE FROM EXTERNAL SERVER //
//
var urlToExternalZippedShapefile = "http://apps.sfgov.org/datafiles/view.php?file=sfgis";
var zippedShapefileName = "sflnds_current";
request({
url: lang.replace("{0}/{1}.zip", [urlToExternalZippedShapefile, zippedShapefileName]),
handleAs: "blob",
load: function (zipResponse) {
//
// STEP #1b - CREATE FORM USING RETURNED ZIPPED SHAPEFILE AS BLOB //
//
var formNode = domConstruct.create("form", {
"method": "post",
"enctype": "multipart/form-data"
});
var formData = new FormData(formNode);
formData.append("file", zipResponse, zippedShapefileName + ".zip");
//
// THIS PART STAYS ALMOST SAME AS BEFORE //
//
var params = {
'name': zippedShapefileName,
'targetSR': map.spatialReference,
'maxRecordCount': 1000,
'enforceInputFileSizeLimit': true,
'enforceOutputJsonSizeLimit': true
};
var extent = scaleUtils.getExtentForScale(map, 40000);
var resolution = extent.getWidth() / map.width;
params.generalize = false;
params.maxAllowableOffset = resolution;
params.reducePrecision = true;
params.numberOfDigitsAfterDecimal = 0;
var myContent = {
'filetype': 'shapefile',
'publishParameters': JSON.stringify(params),
'f': 'json'
};
//
// STEP #2 - CALL 'GENERATE' TO CONVERT SHAPEFILE TO FEATURECOLLECTION BUT USING BLOB NOW //
//
request({
url: portalUrl + '/sharing/rest/content/features/generate',
content: myContent,
form: formData, // NOTICE HOW WE USE THE FORMDATA OBJECT THAT HAS THE EMBEDDED ZIPPED SHAPEFILE AS A BLOB //
handleAs: 'json',
load: lang.hitch(this, function (response) {
if(response.error) {
errorHandler(response.error);
return;
}
var layerName = response.featureCollection.layers[0].layerDefinition.name;
dom.byId('upload-status').innerHTML = '<b>Loaded: </b>' + layerName;
addShapefileToMap(response.featureCollection);
}),
error: lang.hitch(this, errorHandler)
});
}
});
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08-07-2017
07:20 PM
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Bengi, is this the same question as How to Pass File Directly to esriRequest Instead of Using Form Upload? This task will probably involve a two step process; first get the file from the server and then call the 'generate' endpoint. The important thing here is to understand the call you're trying to make: Generate: ArcGIS REST API. The call to 'generate' doesn't have a parameter for URLs and since you're dealing with a zipped shapefile you'll have to use the 'file' parameter which then means you need to send the actual zipped shapefile as a file. Since the zipped shapefile is on a different server you'll first need to get the file to the client machine before sending it to the 'generate' call. Do you have a JSBin or JSFiddle that shows what you're trying to do?
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08-07-2017
05:23 PM
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Then it's a two step process, first you'll first have to retrieve the file from the mentioned uri (and convert it to a blob/arraybuffer if necessary), then the second step is to use some of the techniques mentioned in the post to send it directly in the form property. How you retrieve the file from the server will depend on the server and what it allows, ideally you can retrieve the file as a blob or arraybuffer as that will simplify the process (handleAs:"blob" or handleAs:"arraybuffer").
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08-04-2017
09:40 AM
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2081
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Here's a similar question that might provide some clues: Add attachment without form node The reason we were able to do this in the mentioned post is because we already had the file/image contents as a blob but, as mentioned by Thomas, obtaining local files directly is as security issue. You might be able to do this if you already have the file object as a blob, maybe obtained from an external server/service or some other API.
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08-04-2017
09:14 AM
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2081
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Since 4.0; watching properties is the 4.x way of handling this use case.
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07-28-2017
08:57 AM
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2155
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Read the section "Watching properties" here: Working with properties | ArcGIS API for JavaScript 4.4 view.watch("extent", (newValue, oldValue, property, object)=>{
console.info("Extent has changed: ", newValue);
});
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07-28-2017
08:50 AM
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My kudoed posts
| Title | Kudos | Posted |
|---|---|---|
| 1 | 03-07-2024 04:14 PM | |
| 1 | 02-23-2024 12:40 PM | |
| 1 | 03-01-2024 10:48 AM | |
| 2 | 08-03-2023 02:34 PM | |
| 2 | 07-19-2023 12:05 PM |
Activity Feed
- Got a Kudo for Re: ArcGIS API Viewshed with specific coordinates. 11-20-2024 12:43 PM
- Posted Re: How to edit a graphic, or query a GraphicsLayer? on ArcGIS JavaScript Maps SDK Questions. 10-22-2024 08:39 AM
- Posted Re: Is there a way to run queries via the feature layer api call? on ArcGIS JavaScript Maps SDK Questions. 10-14-2024 04:52 PM
- Posted Re: On a group layer in the sdk if visibilityMode is set to independent why does it not respect this on ArcGIS JavaScript Maps SDK Questions. 07-26-2024 04:34 PM
- Posted Re: TREE COVER LOSS Url on ArcGIS JavaScript Maps SDK Questions. 06-21-2024 12:21 PM
- Posted Re: Authenticate ArcGIS on premise on ArcGIS JavaScript Maps SDK Questions. 06-13-2024 11:35 AM
- Posted Re: get angle between two points to rotate the map View on ArcGIS JavaScript Maps SDK Questions. 05-14-2024 03:54 PM
- Posted Re: get angle between two points to rotate the map View on ArcGIS JavaScript Maps SDK Questions. 05-13-2024 05:20 PM
- Posted Re: Blinking/flashing/pulsing point symbol in JS API v4x? on ArcGIS JavaScript Maps SDK Questions. 05-02-2024 02:55 PM
- Posted Re: Overview map sample code "AbortError" on ArcGIS JavaScript Maps SDK Questions. 04-26-2024 12:07 PM
- Posted Re: Intersection is not accurate on ArcGIS JavaScript Maps SDK Questions. 04-05-2024 01:51 PM
- Kudoed Re: Intersection is not accurate for SteveCole. 04-04-2024 09:11 AM
- Posted Re: MapView not centered, zoom working different, getItemAt now zero-based index. on ArcGIS JavaScript Maps SDK Questions. 03-12-2024 04:24 PM
- Got a Kudo for Re: Create Label Symbol for Interstate. 03-08-2024 05:38 AM
- Posted Re: Create Label Symbol for Interstate on ArcGIS JavaScript Maps SDK Questions. 03-07-2024 04:14 PM
- Kudoed Re: Javascript Popup Directions Action for LaurenBoyd. 03-06-2024 04:57 PM
- Got a Kudo for Re: Is it the case that colormap raster functions can only render pixel values in the range of 0-255?. 03-03-2024 05:54 PM
- Got a Kudo for Re: Is it the case that colormap raster functions can only render pixel values in the range of 0-255?. 03-03-2024 05:54 PM
- Posted Re: How to symbolize the Stream Layer using a unique value renderer and with an arrow indicating the direction of movement based on the attribute? on ArcGIS JavaScript Maps SDK Questions. 03-01-2024 11:07 AM
- Posted Re: Is it the case that colormap raster functions can only render pixel values in the range of 0-255? on ArcGIS JavaScript Maps SDK Questions. 03-01-2024 10:48 AM
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