Impact 2024: The Industrial Data and AI Conference for and by Users
How can you with the opc-ua extractor read from the server only some specific tags with some parameter in the YML configuration file?So far with this extractor all tags are sent to CDF.
Are there any documented use cases or papers on integrating MLflow with Cognite, or is it something we need to implement ourselves?For example, if we aim to seamlessly integrate the MLflow UI with Cognite to evaluate and select the top-performing models, we could leverage SQLite, which operates on the local file system (e.g., mlruns.db) and provides a built-in client, sqlite3. However, our preference is to seamlessly integrate it with Cognite.
I’m working on a prototype for a flexible data model to store time series data in a way that is easy to catalogue, query and filter. Using Pygen both to populate and use the model seems convenient.At its current iteration, I’ve only applied direct relations and (undocumented?) @reverseDirectRelations in the GraphQL schema. I expected to be able do something similar to client.windmill(windfarm="Hornsea 1").blades(limit=-1).sensor_positions(limit=-1).query()as found in the Pygen documentation, but it does not work (my client.windmill analouge has no methods corresponding to its relations). Do I have to use edges instead of relations to query easily and declaratively with Pygen?
Using Stlite instead of a hosted Python runtime naturally limits the usability of Streamlit. I’m curious to what degree the following limitations have been considered and may be mitigated:Query parameters: my app use query parameters to store the state and enable easy sharing of configurations. Will Streamlit on CDF ever support this? Session state, persistence: How should things persisted when all is lost on a simple refresh? I don’t image writing state to CDF would work well. Memory: I’ve worked with larger data sets of which only summaries are shown to the user. Could cognite functions work as a backend for this? 3rd party libraries: Pydantic 2, Pola.rs &c. can’t compile to WASM (yet). I don’t image there is anything you can do about this, but I mention it because it is probably the most significant limitation and I’m curious as to whatever thoughts you have on it.
I created a Streamlit app which I was viewing after hiding Toolbar and Code by selecting those option from UI (top right hand side)I am now unable to bring back the code in UI. It’s quite big app with a lot of code. I don’t want to loose it.Can someone help?
Hello, I am trying to perform a calculation on Charts but it does not work. It is a multiplication of 4 time series, all of them with a resample to granularity to 1m. One of them has real values and 3 of them are 0/1 steps. When I zoom out, I can see the calculation and it shows a pick of values, that is not accurate as it shows average data. Although when I zoon in to see the data, the trend disappears, the error says “One of the time series has less than two values”. As I resampled the data to 1 minute, I was expecting to see one values per minute, but it does not seems to happen. Is there other way to calculate the data correctly? Zoom in:
What are the permissible size of file can upload in CDF ? Which type of P&ID files are directly read in CDF ? Which type of 3D Model files are directly read in CDF ? Is any converter tool is available in CDF for conversion of file in to require file format for P&ID and 3D model in cognite data fusion ?
Hello everyone. We have some checklists where the operators measure the length of something, usually in feet and inches, like 1’10”. We have been facing some trouble creating tasks with this type of data on the templates, we could only add decimal numbers. How have you been handling this type of data?Thank you.
Hi,I’m using the Charts function “Statistics/Outlier Removal” and noticed that the option “Remove zeros” (aka del_zero_val) does the exact opposite of what one would expect. Example of a data stream filtered without “Removes zeros” Example of a data stream filtered with “Removes zeros”Is this a bug or the intended behaviour? If the latter then I think the naming/documentation is misleading.
When displaying many similar time series together in Charts, it is useful to select “Merge unit” to reduce the number of Y axes. This functionality does not follow the chart when inserted in a canvas. Have I missed something here?
Hello Everyone, I’m new with CDF I would like to know how can we take the best of CDF to implement Machine Learning or Artificial Intelligence solutions in my company?
Greetings,I'm currently involved in a research project where we are considering the integration of B2MML (Business To Manufacturing Markup Language) data with Cognite Data Fusion (CDF). Our goal is to enhance our data analytics capabilities in a manufacturing context.I am reaching out to this knowledgeable community to gather insights and experiences regarding the following: B2MML Data Extraction: Have any of you worked on extracting data from B2MML-formatted sources? What challenges and best practices have you encountered in this process? B2MML Data Ingestion into CDF: Has anyone successfully configured B2MML data ingestion into Cognite Data Fusion? Could you share any specific strategies or tools you used for this integration? What were the major hurdles, and how did you overcome them? Any detailed experiences, technical insights, or even pointing towards relevant resources or case studies would be immensely helpful.Thank you in advance for your valuable input! Best regards, Art
I am running worklow having two function. Functions independently working fine. On trigger of workflow, first step runs and second step is failing with internal server error. Also, multiple call to second function are observed. No other workflow is in place for second function’ingest-test’ that could trigger this function.I have tried passing same input ’ingest-test’ that is expected from previous function. It works fine and produce ouput in 18s. Sharing third snippet of it.
I have updated version to v2 of workflow. But still it runs v1 version.
I have created workflow using functions, both functions are running individually fine. They both run under 4 seconds. IF I run as user from UI, only first function runs, and error stating something went wrong is not helping to understand issue. I created schedule to run this workflow. However, there I see no problem, How can we test our workflows if they are failing to run as user from UI ? And can there be more specific error stating what exactly went wrong.
Hello everyone! I have several binary timeseries that are displayed correctly when I ask for a short period of time: However, if I ask for a longer timespan, like a year, Charts gives me the aggregates, which I believe would be fine on some cases, but in this particular binary case, it does not make any sense. The final user cannot use this information to perform any analysis; any calculations, thresholds, or just “taking a look to see the trend” will not give an accurate result. Is it possible to choose to disable the use of aggregates for cases like this? Thank you in advance.
Hello, I would like to know what is the best way to plot two variables in a XxY chart instead of stacking them. For example: I have “variable A” and I want it on Y axis and “variable B” on X axis instead of timestamp. Is it possible to do it using Charts, Canvas or should I do it on Power BI?
Is there a tool for planning an schedulling scaffolds ?
Hello everyone.I have a use case that I have been trying to figure and I'm hoping you could help me.We have an equipment, let's say a pump, and we have a timeseries for its flow. We consider that the pump is operating as long as the flow is above a threshold.In PI, if I want to know how long the pump was operating, I can simply use PITimeFilterVal function in Excel to retrieve the amount of time that the timeseries was above the threshold. Me and my team have been trying to do this with Cognite, with no success. We tried transforming the timeseries to a 0 or 1 using the “Threshold” function, and then integrating it, but we have faced some limitations due to the approximations that are intrinsic to the integration function.Unfortunately, I cannot show you the actual data, be we checked a few days where the pump starts the day operating - at 00:00 - and at 2 am our integration gives us a value of 1.84h - when it should be as close as 2h as possible. This difference, even though slight, i
We have some people who already have Tableau. Is it possible to use Tableau to visualize data from Cognite Data Fusion? If so, any guidance on setting up the connection?
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