topic Re: Adding Geoprocessing to HTML or Java in Developers Questions

Adding Geoprocessing to HTML or Java

JasonSchelte — Fri, 06 Nov 2015 10:46:54 GMT

I am working on a project and I am pretty stuck. I would like to create a route based on directions. That is the easy part. Then do a search for a particular service, Gas Stations, Restaurants, Stores. I want the particular location along my route. My guess would be to create a buffer around my route (based on how far I would be willing to go off my route), and then clip the services that fall within the buffer. The issue with most searches is that when I do the search it gives me a radius search from my location or beginning location. I would like to find services along my route to help me choose the best location for a ce to stop.

I added a script, which is basically the Directions API. I like the way it is formatted with the options on the right. I am open to some ideas if anyone has any.

Thanks for your help.

Jason

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Mon, 09 Nov 2015 14:36:02 GMT

Jason,

Do you have a service that would be used to represent the places youe are wanting to search for along your route (i.e Gas Stations, Restaurants, Stores)?

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Mon, 09 Nov 2015 14:59:13 GMT

Robert, that is the part I am kind of trying to figure out. When I use the

Directions API for example I can get a few choices. Not sure if I can get a

specific list. Also is the buffer possible after the route is created? Do you

think that this is something that is possible?

Thanks for the help with this,

Jason

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Mon, 09 Nov 2015 15:03:05 GMT

Jason,

Sure you can get the routes geometry and then using the JS API you can buffer that route geometry. The issue would be having a mapservice that represents the desired stops for Gas Stations, etc.

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Mon, 09 Nov 2015 15:08:13 GMT

Hmm, ok . Do you have any ideas on how we could accomplish that? Will it be

easier to go through ArcGIS online for something that. Or is there a way to do

the search after we have the buffer?

Jason

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Mon, 09 Nov 2015 15:14:29 GMT

Jason,

The only way I am familiar with is to have a map service that is a point feature for your Gas Stations, etc and use the QueryTask in the JS API to get the features of that map service that intersect the buffer.

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Mon, 09 Nov 2015 15:19:37 GMT

Ok, that seems like it might work. Would I be able to get the info from the

point that was queried? For instance the address so I could re-input that in

the directions search. Are you able to create something like that? I am not

the strongest in writing Script.

Jason

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Mon, 09 Nov 2015 15:23:45 GMT

Jason,

I all boils down to you having a mapservice that represents your POIs (Gas, Food, etc.). If you find that then I might be able to find some time to provide you with some code example.

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Mon, 09 Nov 2015 15:40:01 GMT

Would the ESRI query, work as a map service that could do the search?

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Mon, 09 Nov 2015 15:49:01 GMT

Jason,

I am not sure what you are referring to when you say "ESRI query"...

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Mon, 09 Nov 2015 16:00:25 GMT

https://developers.arcgis.com/javascript/jssamples/search_basic.html

There is an example search query script in the samples part of the API

section. Maybe I am confused too. Do you know of a service that has a search

function like a google map search?

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Mon, 09 Nov 2015 16:15:20 GMT

Jason,

That example is using a locator service not a map service. To be able to do a spatial search (i.e. intersection of a POI point and the buffer) you have to have a map service that contains those POIs.

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Mon, 09 Nov 2015 17:29:13 GMT

I have done a quick search. I don't see anything that comprehensive without

paying for some sort of data bundle from a website. Have you seen any sort of

map service that has a pretty good amount of locations that would be useful. I

am heading home soon, I added my personal email, if possible can you reply to

all.

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Mon, 09 Nov 2015 17:33:13 GMT

Jason,

I am not aware of such a service.

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Fri, 13 Nov 2015 11:10:52 GMT

Robert, I have access to the data now and will start putting it together.

Should I try to sort the type of restaurant or group them? Also have you had a

chance to think about the way to set up this file?

Jason

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Fri, 13 Nov 2015 13:53:43 GMT

Jason,

Should I try to sort the type of restaurant or group them

I don't have a clue. Consider what you goals are.

As far as the development and code. First let me warn you that this is going to be a challenge for a beginner/novice.

First you are using the directions widget so you will want to attach a dojo event listener to the directions dijit "directions-finish" event and get the route results route graphic.
Now that you have the route graphic you will need to buffer that using a GeometryService object. Here is a sample that will give you a beginning point: Geometry Service - Buffer | ArcGIS API for JavaScript
Once you have the buffer graphic you will want to do a QueryTask using the buffer graphic as the Queries geometry. Here is another sample that you can use a starting point for that portion: Select with Feature Layer | ArcGIS API for JavaScript
Then you decide what to do with the query results do you wan to display them on the map or as text some how in your app.

You have a long road ahead of learning the JS API to accomplish this.

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Tue, 17 Nov 2015 10:38:01 GMT

Hey Robert, I have the beginning piece put together. I am working on getting

the data put together. The map did not show when I tried to run it. Can you

see any issues in it?

Jason

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Tue, 17 Nov 2015 13:32:56 GMT

Jason,

What am I suppose to be looking at? Did you update the original attachment?

Re: Adding Geoprocessing to HTML or Java

JasonSchelte — Wed, 18 Nov 2015 10:06:18 GMT

Robert, that is the updated script with the directions and the buffer portions

on it. I also have the data now, but it was more than 1000 points so I am

going to have to bring it down to a lesser amount. Unless I can get one of the

servers up and running. Are you able to review the script to see if I am on

the right track. Also now that I have the data what should I be doing to show

the points within the buffer?

Jason

Re: Adding Geoprocessing to HTML or Java

RobertScheitlin__GISP — Wed, 18 Nov 2015 13:05:33 GMT

Jason,

I don't see a thing different in the attached script. People in GeoNet will be more than happy to assist with coding when individuals get stuck, but this is not a place where you ask other to do the coding for you. You may needed to hire a consulting company for this as what you are wanting to do is not as simple as copy and pasting a couple of scripts together.