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 on: Today at 11:38:14 AM 
Started by martin_xtm - Last post by homburg
Hi martin_xtm,

you are right, there is no jitter control in the advanced charts plotter. The reason is that it in most cases jitter is used to inspect data but is not needed for creating charts. Most of the classic charts do not support it either. If you want to apply some jitter to your data before exporting charts you may add the "Add Noise" operator to your process and select target attributes and intensity of jitter to get a slightly perturbed data set.


 on: Today at 10:57:49 AM 
Started by dajoedic - Last post by homburg
Hi dajoedic,

it looks like there is no file associated to the "Read CSV" operator. Did you use the import wizard directly from the parameter tab of the operator? It would be great if you could post the xml code of your process here.


 on: Today at 09:31:17 AM 
Started by martin_xtm - Last post by martin_xtm
In the normal plot view in the results perspective it is possible to jitter the datapoints simply by dragging the Jitter slider.

This function is very useful to visualize the quantity of data points. Unfortunately I cannot find the Jitter slider anywhere in the advanced charts view which offers the options to export the plot in a presentable way.

Does anyone know how to Jitter the plot in the advanced charts view?

 on: Today at 09:20:56 AM 
Started by dajoedic - Last post by dajoedic

I didn't work for a long time with Rapit Miner and I have a problem with reading csv files.
I use the "Read CSV" operator, select my csv file with the "Import Configuration Wizard", follow the steps and want to do some kind of clustering afterwards. When I run the prozess there is always the Error Message: "No input file was defined. No file input defined: depending on the source type configuration of your operator, you have to either connect the file input port or define the parameters which specifies the file to be read."

Reading Excel files work fine.

I'm using RapidMiner 5.3.013.

For more information please contact me.

Thankls for your help.


 on: Today at 07:38:16 AM 
Started by MarcoBarradas - Last post by Marco Boeck

RapidMiner Server 2.0.3 introduced a new system setting which can be altered to increase the session timeout. To change it, go to Administration, System Settings and add a setting with the key 'com.rapidanalytics.web.session.timeout' and a value in seconds for the session timeout. For example setting the value to 1800 would set the timeout to 30 minutes.


 on: August 19, 2014, 08:04:36 PM 
Started by MarcoBarradas - Last post by MarcoBarradas
I'm trying to extend the session timeout.
The reason is that I developed a dashboard on RapidMiner Server that enables the customer understand whats happening with some customers. This analysis may take from 3-5 minutes, understanding whats happening with the customer and the person that is in charge of the attention. After 5 min when they click on another customer the system will log them out, I understand their is a security reason for this, and this makes the customer uncomfortable.
I guess this is a parameter I could override on the system settings by adding a property, does anybody knows which property could this be?

Thanks in advance.

 on: August 19, 2014, 03:34:40 PM 
Started by Alina - Last post by homburg
Hi Alina,

can you tell me more about your process and its loop? In many cases one can easily accumulate data using an append operator after the loop.


 on: August 18, 2014, 04:59:52 PM 
Started by mataio - Last post by homburg
Hello mataio,

the reason for your problem is the lowercase "e" character your numbers are formatted with. You can solve the problem by loading the numerical column as nominal, replace all occurrences of "e" with an "E" and finally parse to numbers. Please have look at the following process (just paste this in the xml tab of RapidMiner):

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="6.0.008">
  <operator activated="true" class="process" compatibility="6.0.008" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="read_csv" compatibility="6.0.008" expanded="true" height="60" name="Read CSV" width="90" x="112" y="75">
        <parameter key="csv_file" value="C:\Users\hhomburg\Documents\num_test.csv"/>
        <parameter key="column_separators" value=","/>
        <parameter key="first_row_as_names" value="false"/>
        <list key="annotations"/>
        <parameter key="encoding" value="windows-1252"/>
        <list key="data_set_meta_data_information">
          <parameter key="0" value="att1.true.polynominal.attribute"/>
          <parameter key="1" value="att2.true.polynominal.attribute"/>
      <operator activated="true" class="replace" compatibility="6.0.008" expanded="true" height="76" name="Replace" width="90" x="246" y="75">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="att2"/>
        <parameter key="replace_what" value="e"/>
        <parameter key="replace_by" value="E"/>
      <operator activated="true" class="parse_numbers" compatibility="6.0.008" expanded="true" height="76" name="Parse Numbers" width="90" x="380" y="75">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="att2"/>
        <parameter key="grouping_character" value="e"/>
        <parameter key="unparsable_value_handling" value="replace with missing values"/>
      <connect from_op="Read CSV" from_port="output" to_op="Replace" to_port="example set input"/>
      <connect from_op="Replace" from_port="example set output" to_op="Parse Numbers" to_port="example set input"/>
      <connect from_op="Parse Numbers" from_port="example set output" to_port="result 1"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>

Please note: Since you are using very small numbers, adjust the rapidminer.general.fractiondigits.numbers parameter in RapidMiner to something bigger than 3. You will find this setting via Tools -> Preferences.


 on: August 18, 2014, 03:32:33 PM 
Started by mataio - Last post by mataio
Hello everybody,

I have a rather simple question but I can't find an answer, so I try it here.

I have a simple RapidMiner (Read csv + store) process to import data from a text file. This data includes a column with very small numbers like 1.23e-5. No matter which settings I tried in the Import Configuration Wizard, the column is imported as "?".

Does anyone have an idea how I can pass the data correctly to RapidMiner?

Thanks for your help Smiley

 on: August 18, 2014, 12:01:03 PM 
Started by stegmannt - Last post by stegmannt
This is clearly not the way to go then, if the upload process already takes more than 5 minutes. I noticed MySQL  behind taking even more time to import the rows and I have up to 2GB of data I want to use.

Is there any other way I can upload my data to the server? I noticed the upload function in the web interface, but that leaves me with a binary blob. Using the blob with any import operator results in an error, that the repository url "//_LOCAL/..." is malformed.


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