topic Re: Show more features button in ArcGIS JavaScript Maps SDK Questions

Show more features button

EvelynHernandez — Tue, 10 Jul 2018 15:38:05 GMT

Hello everyone,

I want to know if there is an example on how i can handle a lot of data returned from my rest service (more than 1M features) in a good way.

My idea is doing something similar like a table that loads the first 50 features with a button that says "show more". So when u press it u load the next 50 and so on (till complete the 1M if the user wants).

Is there any way on how to handle this?

Thanks in advice

Re: Show more features button

EvelynHernandez — Thu, 12 Jul 2018 13:58:02 GMT

No ideas?

Re: Show more features button

JackFairfield — Thu, 12 Jul 2018 16:58:51 GMT

Which version of the API are you using?

Re: Show more features button

EvelynHernandez — Thu, 12 Jul 2018 17:16:41 GMT

3.24

Re: Show more features button

JackFairfield — Thu, 12 Jul 2018 17:25:05 GMT

How about something like this?

It loads features as you scroll down in the table:

ArcGIS API for JavaScript Sandbox

Re: Show more features button

EvelynHernandez — Thu, 12 Jul 2018 17:47:18 GMT

Yea something like that, but there u dont use a query.

I have a query and a querytask with some where condition.

Re: Show more features button

JackFairfield — Thu, 12 Jul 2018 17:51:39 GMT

Can't you just set the definition expression instead of using queries?

Re: Show more features button

EvelynHernandez — Thu, 12 Jul 2018 18:49:17 GMT

Nope.

Re: Show more features button

JackFairfield — Thu, 12 Jul 2018 20:13:59 GMT

Why not? Can you post some of your code?

Re: Show more features button

EvelynHernandez — Thu, 12 Jul 2018 20:35:26 GMT

Thats why i wanted an example. Most of the time im using query and querytask to get data from the service (im not using maps and im not using the featuretable that arcgis has (because i dont like how it looks). Also the map im not using it, only the data and manipulating it for doing some calculations or something else.

The thing is i want to know if there is a way (even in js) to perform a very big query to handle data in chunks (how most of the time in some eshops show the products with a button setted on show more to show the next 10 or 20 products.

Re: Show more features button

JackFairfield — Thu, 12 Jul 2018 21:05:13 GMT

Why don't you just bypass the ArcGis JS Framework entirely and use ajax to sort through the results.

Here is an example:

Simple AJAX Example

Re: Show more features button

EvelynHernandez — Fri, 13 Jul 2018 13:37:34 GMT

That's what i was talking about. I will check it but i think it will be useful for me.

Thanks !