MS Access Database Driver in an Windows Server 2012 r2 Environment
Hi,I have used the UCANACCESS driver/lib successfully to write data into an Access database on a Windows 7 System. (https://sourceforge.net/projects/ucanaccess/?source=typ_redirect)I now moved on to a...
View ArticleSpecial sign doesn't always appears
Hello everybody,I have a problem with my flow: sometimes it works without any problemes (the special signs are replaced) sometimes not (the special signs are replaced with a "?"Where does it come from?...
View ArticleCalculating Inventory level from Orders and Returns
I have two data files. One contains orders (day and article identifier) and the other one contains the returns (day and article identifier). I want to calculate the inventory level (inventory level of...
View ArticleConfusion Matrix/Accuracy Statistics for learner model
Hi all,While developing the classification model, We use the Learner and predictor node, The learner node, generates the model, based on supplied training set data and the predictor mode use the...
View ArticleLow utilization processor capacity
I'm using Knime server lite on a Windows server 2012 R2 based system with 4 Xeon processors with 4 cores each and 36 GB internal memory. The heap space in the ini file is configured on 16 GB yet.I have...
View ArticleCustom Node Development Contractors
Hello,I hope this is not the wrong forum, but we are looking for a freelance developer to build some nodes for us. Please send me a message if you are interested. Areas are:Google APIs Text Analytics...
View ArticleGoogle Maps API in Generic Javascript View
Hi all,I'm trying to visualize heatmaps on Google maps with the Generic Javascipt Node, but it doesn't work.It succesfully visualizes the map but no heatmap appears, it seems that there is some trouble...
View Article04_Meassuring_Variable_Importance do not work with split column
Hi everybody I downloaded and tested the "04_Meassuring_Variable_Importance" workflow which is found under 04_Analytics/11_Optimization/04_Meassuring_Variable_Importance in the Knime Examples. The...
View ArticleKnime RF vs Weka RF
I would like to get the information about the algorithm/performance of Random Forest node available under Analytics>Mining>Decisio Tree Ensemble>Random Forest>Classification> Random...
View ArticleBug fix: Binary Scorer Binner Performance
Hi AllI've just commited a bug fix to: trunk, 3.1, 3.2 and 3.3The bug:Rows where the target value does not conform to the active or inactive values are treated as false predictions. Fix:Rows with...
View ArticleCreating Flow Variables in R Scripting Nodes
How do you create a flow variable inside of a R scripting node? What is the proper syntax?I know how to create flow variables in python nodes by using the following syntaxflow_variables["variablename"]...
View ArticleFlow variables created in python- Converting from Unicode to ASCII
I am creating flow variables in python nodes that contain metadata information associated with a microarray. I am trying to pull this information from a database, convert it to a flow variable, and...
View ArticleProblems hardware with KNIME
Good Afternoon,I want to post in this forum because I have a problem with a provider who use knime. My provider tell my that Knime uses a lot of RAM and a lot of space in disk, I want to know, how I...
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RDKit Fingerprint Bitvector Read as Series in Python Script
Hi,I am using an RDKit Fingerprint node to generate a bit vector for a SMILES column. This is successful and I see in the output table that my column type is "Bit vector" for the generated...
View ArticleMongoDB relationship
Hello,I am using the "MongoDB Writer node" and Knime generate special value.MongoDB browse this type of JSON value : { "_id" : ObjectId("583d1a71fed417940b00002c"), "link" : "http://www.google.ch",...
View ArticleBIRT - PDF Report Image Quality
Hey folks,I created a BIRT report and want to export this report as a PDF file, in which I want to include two images (BMP, 1001 x 1001 pixels). The problem is, that the image quality within the PDF...
View ArticleReading multiple Excel files and their sheet names
Hello,I'm trying to set up a workflow which loops through a directory which contains several Excel files. These Excel files have three different sheet names but only two of them are important for me...
View ArticleGroupby Node. Group by few columns but show all columns in result
Hi,I am using groupby node. And grouping result by a column. Further defined Sum as aggregation method in manual aggregation tab. Result shows me only columns i used in grouping. I want to select all...
View ArticleJavaScript Scatter Plot: Date on axis changes to Integer if I browse through...
Hi,today I found out in KNIME 3.2.1 that the new(er) JavaScript Scatter Plot does support a Date datatype (the normal scatter plot does not) and I can even adjust the date format style like mm.dd.yyyy....
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