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Instrumenting the Duration Event Property
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[Amplitude] Device Type and Device Family fields
How do we set session in Amplitude while using Segment in Cloud Mode?
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Segment + Amplitude: Best Practices
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sergiiStargazer

Building and Sharing Your Analysis

How to add the calculation of any two events to the ROLLWIN() function?

Hello dear Support service!I have previously submitted a question to the ticket https://community.amplitude.com/building-and-sharing-your-analysis-58/how-can-several-events-with-certain-time-intervals-be-displayed- in-one-chart-1030?postid=3547#post3547 for which you quickly found a solution, for which I am very grateful!Since that ticket is already marked as RESOLVED, I decided to create a new ticket.I need to add another chart where I will use events A and B in it (these can be any events)First I need to do some simple math between events:Event A multiplied by 100 and divided by event B - A*100/B.Next, I need to substitute the result of these calculations in the ROLLWIN() form in order to display the result of the formula on the chart. But I can't do that because the specific syntax of the ROLLWIN() formula doesn't allow me, I can only use:ROLLWIN(UNIQUES, A, 7)ROLLWIN(TOTALS, A, 7)So the question is, how do I substitute the result of my calculations (A*100/B) into the ROLLWIN() form

kavithajayaramNew Member

Instrumentation and Data Management

How many event properties can an event have

Maximum how many event properties can an event have?

Jeremie GluckmanCommunity Manager

Community Guidelines

Getting started 🚀

Welcome to the Amplitude Community! We’re here to chat about digital optimization in these categories, where you can search for answers, post questions, and start discussions. You can also: Explore the latest product updates, share product ideas, and help others to become an Amp Champ! If you haven’t already, log in or create a profile, introduce yourself, and review our community terms and conditions. In addition to myself, your community manager, our Technical Support team will be moderating content. Don’t be shy and get to know fellow Datamonsters!

Jeremie GluckmanCommunity Manager

Amplify is in 2 weeks! Who plans to be there?

Will you be joining us in Vegas for Amplify - the #1 product conference? Let us know in the comments below. Here are the top 5 reasons to join us at Amplify, May 24-26, at the ARIA. Fresh ideas: What’s the latest in how to build the best digital products, and how to win in the market? Our heavyweight speakers will tell you, including Elena Verna (Reforge), John Culter (Amplitude), Blake Bartlett (OpenView), and Melissa Perri (Produx Labs, HBS). Community: 1000+ top leaders across product, growth, data, and marketing are coming to reconnect IRL at Amplify. Don’t know anyone else going? Join one of our networking roundtables to meet other leaders solving for the same problems as you. RSVP here: Lessons learned: Get the real scoop on how companies like Miro, SoFi, Under Armour and CrowdStrike leverage analytics to get the insights needed to unblock teams, build winning products faster, and optimize for business growth. Cool news: Starting with the keynote from Amplitude CEO Spe

allanthomasofNew Member

Building and Sharing Your Analysis

Error while generate appbundle with Flutter

Hello,i’ve integrate my app with Amplitude and he works fine, build app and send events, all its OK.But, my problem is when i try generate the appbundle (.aab) of my application with command flutter build appbundle.The problem was started when i installed the pub flutter_amplitude, i try install all versions, but the problem persists.If i remove the amplitude, i can generate the appbundle without problems.The error showed on the terminal is:Gradle build failed to produce an .aab file. It's likely that this file was generated under C:\dev\myapp\build, but the tool couldn't find it.I’m using:Flutter: 2.5.3Dart version 2.14.4Anyone can help me, please? Thanks!!

rahulsekharNew Member

Building and Sharing Your Analysis

Visualizing grouped data

We’re tracking an event when a user attends one of our sessions - grouping these events by the session ID, we’re able to see the attendance for each session (see below):What we’d really like to see is the data organized a little differently - a histogram of how many sessions were attended by 0-20 members, how many were attended by 20-40, how many by 40+. Is there any way for us to do this?

sergiiStargazer

Building and Sharing Your Analysis

How can several events with certain time intervals be displayed in one chart?

Good afternoon dear community. I need to create one chart and I have one event which comes from Segment service. I need to display in the chart the sum of incoming events for the previous 30 days. And also for every day during the past 30 days. For example, today is May 11, I need to display the number of events from May 11 to April 11 - this will be the 1st bar in the chart, then I need to display from May 10 to April 10 - this will be the 2nd bar in the chart and so on until the date interval from April 11 to March 11. That is, there will be 30 bars in the chart with intervals in the previous 30 days. The key is that it would not be necessary to manually select date intervals for 30 days, but that they would be set up automatically (the last 30 days were simply taken). I found that under each event you can add a where "Server upload time" condition. That is, there is a way to add 30 identical events and manually add the where "Server upload time" condition to each of them, but the pr

psoaresNew Member

Instrumentation and Data Management

User profile api is returning "Invalid Api-Key"

I am calling https://profile-api.amplitude.com/v1/userprofile endpoint using Insomnia/Postman with the header “Authorization: Api-Key <My-Api-Key>” but the response is always “Invalid Api-Key”.I’ve only one project and only one Api-Key, so does anyone know why I'm getting this response?Thanks in advance!

assemblyNew Member

Instrumentation and Data Management

creating a custom Flutter action using Amplitude's pub.dev package

Hello,I posted the following question also in Stackoverflow: https://stackoverflow.com/questions/72254438/how-do-i-use-amplitudes-flutter-package-in-a-custom-action I installed the following pub-dev package: https://pub.dev/packages/amplitude_flutterAmplitude has a flutter SDK and a flutter package which should allow the app to send events to the Amplitude server.I want to execute it within a custom action so that I can send events when the users performs certain actions.Here is the code[1]. IDE errors include: Error: 'Amplitude' is imported from both 'package:amplitude_flutter/amplitude.dart' and 'package:amplitude_flutter/web/amplitude_js.dart Error: Can't assign to the final variable 'analytics'. analytics = Amplitude.getInstance(instanceName: "Assembly");I have also tried to run “flutter run” in an IOS Simulator on a Mac. I am unable to get it to run.When I comment out everything in the custom action, it does run. [1]: https://gist.github.com/timfong888/c36ae11afe053f33

guenenaNew Member

Building and Sharing Your Analysis

Bucketing users by properties for funnel analysis / How do User Filters work

Hi everyone, I’m new here and this might be a well known answer – I tried searching but wasn’t able to find one. My high level goal is to set some user Amplitude properties that I can later on use to bucket users into categories and use that for funnel analysis. The problem is at user signup I don’t have the values for those properties yet (for example the user hasn’t shared their location yet) I wanted to understand first what those two user filtering properties mean: Is the following correct for the following image: Any Events that are performed by any user who at the current time (not the time of the event) their User Property Country = “United States” (i.e. a user who had an empty Country at the time of the event but their current User Property Country = “United States” will be included) Filter applied to event #1 Is the following correct for the following image: Any Events that are performed by any user who at the current time (not the time of the event) their User Property Count

sergiiStargazer

Building and Sharing Your Analysis

How to add the calculation of any two events to the ROLLWIN() function?

Hello dear Support service!I have previously submitted a question to the ticket https://community.amplitude.com/building-and-sharing-your-analysis-58/how-can-several-events-with-certain-time-intervals-be-displayed- in-one-chart-1030?postid=3547#post3547 for which you quickly found a solution, for which I am very grateful!Since that ticket is already marked as RESOLVED, I decided to create a new ticket.I need to add another chart where I will use events A and B in it (these can be any events)First I need to do some simple math between events:Event A multiplied by 100 and divided by event B - A*100/B.Next, I need to substitute the result of these calculations in the ROLLWIN() form in order to display the result of the formula on the chart. But I can't do that because the specific syntax of the ROLLWIN() formula doesn't allow me, I can only use:ROLLWIN(UNIQUES, A, 7)ROLLWIN(TOTALS, A, 7)So the question is, how do I substitute the result of my calculations (A*100/B) into the ROLLWIN() form

kavithajayaramNew Member

Instrumentation and Data Management

How many event properties can an event have

Maximum how many event properties can an event have?

psoaresNew Member

Instrumentation and Data Management

User profile api is returning "Invalid Api-Key"

I am calling https://profile-api.amplitude.com/v1/userprofile endpoint using Insomnia/Postman with the header “Authorization: Api-Key <My-Api-Key>” but the response is always “Invalid Api-Key”.I’ve only one project and only one Api-Key, so does anyone know why I'm getting this response?Thanks in advance!

assemblyNew Member

Instrumentation and Data Management

creating a custom Flutter action using Amplitude's pub.dev package

Hello,I posted the following question also in Stackoverflow: https://stackoverflow.com/questions/72254438/how-do-i-use-amplitudes-flutter-package-in-a-custom-action I installed the following pub-dev package: https://pub.dev/packages/amplitude_flutterAmplitude has a flutter SDK and a flutter package which should allow the app to send events to the Amplitude server.I want to execute it within a custom action so that I can send events when the users performs certain actions.Here is the code[1]. IDE errors include: Error: 'Amplitude' is imported from both 'package:amplitude_flutter/amplitude.dart' and 'package:amplitude_flutter/web/amplitude_js.dart Error: Can't assign to the final variable 'analytics'. analytics = Amplitude.getInstance(instanceName: "Assembly");I have also tried to run “flutter run” in an IOS Simulator on a Mac. I am unable to get it to run.When I comment out everything in the custom action, it does run. [1]: https://gist.github.com/timfong888/c36ae11afe053f33

guenenaNew Member

Building and Sharing Your Analysis

Bucketing users by properties for funnel analysis / How do User Filters work

Hi everyone, I’m new here and this might be a well known answer – I tried searching but wasn’t able to find one. My high level goal is to set some user Amplitude properties that I can later on use to bucket users into categories and use that for funnel analysis. The problem is at user signup I don’t have the values for those properties yet (for example the user hasn’t shared their location yet) I wanted to understand first what those two user filtering properties mean: Is the following correct for the following image: Any Events that are performed by any user who at the current time (not the time of the event) their User Property Country = “United States” (i.e. a user who had an empty Country at the time of the event but their current User Property Country = “United States” will be included) Filter applied to event #1 Is the following correct for the following image: Any Events that are performed by any user who at the current time (not the time of the event) their User Property Count

kavithajayaramNew Member

Building and Sharing Your Analysis

Using an array in one specific event property corresponding to one specific event

Hi Happy to be part of this community. This is my first post here. i am looking to send an event property along with a crash event in below array form. Here I am trying to get the history of incidents x, y, z (from an event property called history) that happened before the actual event crash. Objective is to later classify how many of these x contributed to crash, how many of y contributed to crash etc . Pls note all of x, y, z are not implemented as separate events in amplitude.Sample format:Event name: crashEvent property name: historyEvent property values for history: {x,y,z} in that orderIs above structure ok to move ahead with?If yes, I also want to make a pathfinder or funnel chart or some other chart to understand how many of x usages led to crash and how many of y usages led to crash later. Is there some way in which I can use pathfinder chart and filter out counts by event properties to achieve the same

rahulsekharNew Member

Building and Sharing Your Analysis

How can I track events per subscribed member

We fire an “attendance” event each time a member attends one of our sessions. We’d like to see the number of attendance events divided by the total number of subscribed members over time, so that we have a view of attendance per member. How can we achieve this?I’ve set up a cohort in amplitude that tracks all our subscribed members. I’m not able to figure out how I can use the cohort size in a chart to track the attendances per member, though. Guidance on this would be much appreciated, thanks in advance.

ajimenezStargazer

Building and Sharing Your Analysis

Creating custom events with order

I found this article in the FAQ: https://help.amplitude.com/hc/en-us/articles/360041885332-FAQ-In-the-Events-Module-how-can-I-group-two-or-more-events-together-as-a-single-step-But I can’t seem to be able to combine events, and the only things that custom events allow me to do is:“When ANY of the events below are performed, it will count as user activity for this custom event.” which isn’t that useful. Any thoughts on why this options isn’t available to me?I can create custom events, but not as described there.Thanks in advance! Note: Subforum could’ve been Data Management too.

dpommoNew Member

Building and Sharing Your Analysis

Measuring month on month retention

Hi,I’m trying to analyse month on month retention for different users groups (those who were existing users in the previous month and those who were new users in the previous month) but I can’t seem to create a chart which gives me this analysis and also can’t find anything in Amplitude documentation which supports this.Has anyone had any success in performing this kind of analysis with Amplitude charts? I thought I had found a way to do it by creating two user segments in a Segmentation chart, one segment is users who had performed the active event in each month and the second segment is users who had performed the event in the current month, offset by one month. Sadly this doesn’t give me the right numbers.Many thanks!

WaveonNew Member

Can't select any events while creating a custom event

Hello!.I tried to create a custom event in Data[Beta]. But there is no events I can select even though there are events exist. Does any body know what happens? Thanks!!

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