Latest Contributions by MarikaVertzonis

The infinite monkey theorem states that a monkey hitting keys at random on a typewriter keyboard for an infinite amount of time will almost surely type a given text, such as the complete works of William Shakespeare. You don't have an infinite amount of time to write your survey and hopefully your keystrokes will be less random than that of a monkey, so the time it will take you should be significantly less than infinity. We have provided many resources to help you write your survey: blogs, samples, templates and documentation. Identifying which of these suits which users is as a challenge. Saying something is easy or difficult, alienates as many people as it helps. Borrowing from (and bending) the infinite monkey theorem, we have chosen a classification scale to describe our content. If the goal is a survey (rather than the complete works of Shakespeare), and you have a computer and some sustenance - in this case bananas - you can build your survey. The question is how many bananas? Every monkey needs to eat, and depending on how difficult / complex / time consuming a task is, more sustenance is required. Here is our banana rating for our Survey123 resources:   One banana means you want to create a survey by clicking a few buttons and drag and dropping things in a window. The web is all you want to use, and your survey doesn't need calculations or complex relationships between questions.   Two bananas means that you’re comfortable using Survey123 Connect, and making a more involved survey. You’re ready to implement more complex questions, some visual customization, and even include some simple relevant expressions and calculations. Your survey is still possible on paper, but in Survey123 it’s sharper and easier to use.   Three bananas means that you’re creating surveys too complex for a paper form (or possible, but incredibly tedious). You might be implementing longer and more complex formulas, using hidden questions and values, and calculations referring to multiple answers that would otherwise have to be done manually.   Four bananas means that you’re pushing the limits of what Survey123 is capable of right now. You’re implementing complex surveys, studying what the XLSForm standard is capable of, and speculating about features that Survey123 doesn’t yet support Right now you can see the banana rating in the Samples that are available in Survey123 Connect. New blogs will also use the banana rating to help convey the difficulty, complexity and time to digest for the content. ... View more

This blog introduces Trek2There, a new mobile app from Esri Labs just published to the Google Play and iTunes app stores.  Esri Labs projects are developed by Esri employees and are inspired by our interactions with ArcGIS users like you. Esri Labs projects are free to use but are not official Esri products. These projects do not go through the rigorous software development cycle so they are not holistically tested, documented or supported by Esri technical support. Despite all of these, you may find Trek2There not just awesome, but also pretty useful! You can think of this app as a smart compass that will always point to your destination.  Unlike an ordinary compass, pointing to magnetic North, this app will use your direction of travel to tell you in what direction you should go to reach your destination. Trek2There is particularly helpful when you are trying to find a location in an area where driving directions would not cut it. Say for example, you want to find a point of interest in a forested area with no trails. Say you are trying to find an archeological site, a pond or an asset for which you only know its geographic coordinates. Trek2There only requires two things to work: First, the destination where you want to go provided in geographic coordinates (Latitude/Longitude). Second, it requires you to be outside and moving so your device can fix your location and determine your direction of travel. Let’s first try the app and then I will explain details of how to make it work with your own apps. Trek2There, a first quick test Start by downloading Trek2There onto your Android or iOS device.  You need to feed the app with the coordinates of your destination, these can be typed in manually or more typically are sent from a separate application. For now, we will use a simple web-based app. On your device, launch this web app and tap on the map to select your destination. As you tap you will see a new dialog open from which you can launch Trek2There. Now that the app is running, start walking in any direction and shortly the arrow will rotate to show you the direction and distance to your destination.  Walking with caution and avoiding physical obstacles is all on you!  Trek2There custom URL scheme Using the app is straight-forward as you can see. Launching it and passing the coordinates of your destination is what takes some thought but do not worry, it is not complicated at all. Trek2There can be launched remotely by invoking this custom URL scheme: arcgis-trek2there://?stop=38.133, -117.2324 If you copy the above string and paste it into a browser on your device, you will be able to launch Trek2There and set its destination at the provided latitude and longitude. You could send this URL as a link in an email, or programmatically invoke this URL from a custom developed application. Launching native apps like Trek2There through a custom URL scheme -also often referred to as a deep-link- works fairly well across all platforms when you invoke the URL from a custom native application.  If you invoke the app from a web browser it will work as expected on Windows, iOS and Mac. On Android you may find issues launching the URL scheme from some mail clients and the Chrome browser. Working with Trek2There’s custom URL scheme from your own apps The sample web app illustrates how you can launch Trek2There from your own web mapping app built with the ArcGIS API for JavaScript. If you're comfortable with this API, the source code is pretty straight-forward, showing how you can embed within a popup a Trek2There custom URL scheme. If you build your own applications with AppStudio for ArcGIS, you can of course launch Trek2There as well. Customizing Trek2There The source code of Trek2There is shared under the Apache 2.0 License, so if you like you can take this app and make it your own. May be you want to embed this functionality within your own app, or re-brand Trek2There… your choice! You can find the source code at https://github.com/Esri/Trek2There. Esri welcomes contributions from anyone and everyone. Please see our guidelines for contributing. The easiest way to download the source code is by using AppStudio for ArcGIS Desktop Edition.  Once installed, click on New App and search for Trek2There under the Enterprise category.  You can look at the code, modify it and run it in your Mac or Windows development machine. If you have an AppStudio for ArcGIS Standard license, then you will be able to compile your code for Windows, Mac, iOS, Android and Ubuntu Linux.  ... View more