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Read .Net system.datetime

User: "onep"
onep
New Altair Community Member
Updated by Jocelyn

Hello.

Is there any way that I can read a 18-digit .Net system.datetime in Rapidminer? I like to convert it to something readable for a human.

 

Here is an examble of a number; 634019213109374850

Which should be converted to 2010-02-16​T12:48:30.937Z

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    User: "IngoRM"
    IngoRM
    New Altair Community Member

    Hi,

     

    That is actually pretty tough.  Originally I thought, that you can just convert the ticks into milliseconds and convert this into a date object (see process below).  But the problem is that this does not account for DST, leap seconds etc. which means that in aggregate you are roughly 4 weeks off :smileysad:

     

    I posted the process for educational reasons but this might not something you can easily solve without calling an external .Net routine (which is possible, e.g. with a command line call done by the operator "Execute Program").

     

    Cheers,

    Ingo

     

    <?xml version="1.0" encoding="UTF-8"?><process version="7.3.000">
      <context>
        <input/>
        <output/>
        <macros/>
      </context>
      <operator activated="true" class="process" compatibility="7.3.000" expanded="true" name="Process">
        <process expanded="true">
          <operator activated="true" class="generate_data_user_specification" compatibility="7.3.000" expanded="true" height="68" name="Generate Data by User Specification" width="90" x="112" y="34">
            <list key="attribute_values">
              <parameter key="dot_net_date" value="634019213109374850"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="generate_attributes" compatibility="7.3.000" expanded="true" height="82" name="Generate Attributes" width="90" x="246" y="34">
            <list key="function_descriptions">
              <parameter key="dot_net_date" value="(dot_net_date/10000)-(1970*365*24*60*60*1000)"/>
            </list>
          </operator>
          <operator activated="true" class="numerical_to_date" compatibility="7.3.000" expanded="true" height="82" name="Numerical to Date" width="90" x="380" y="34">
            <parameter key="attribute_name" value="dot_net_date"/>
          </operator>
          <connect from_op="Generate Data by User Specification" from_port="output" to_op="Generate Attributes" to_port="example set input"/>
          <connect from_op="Generate Attributes" from_port="example set output" to_op="Numerical to Date" to_port="example set input"/>
          <connect from_op="Numerical to Date" 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"/>
        </process>
      </operator>
    </process>
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