Unwanted Columns

IngoRM

Question

我试图导入cvs文件以及操作符r do I use to eliminate unwanted columns?

Answer

The data import can be done via two different ways: using theimport wizard into the repository(preferred way, check out this:http://docs.www.turtlecreekpls.com/studio/getting-started/2-importing-data.html) or by using the operatorRead CSV(http://docs.www.turtlecreekpls.com/studio/getting-started/3-data-loading.html). Both videos show examples for Excel but CSV works in principle in the same way.

For removing columns, you have again two options:Select Attributes(http://docs.www.turtlecreekpls.com/studio/operators/blending/attributes/selection/select_attributes.html) can be used to manually select which columns (called “attributes” in RapidMiner). You can keep (or remove) single columns or subsets which is defined in the parameters of the operator. The second option isRemove Useless Attributes(http://docs.www.turtlecreekpls.com/studio/operators/blending/attributes/selection/remove_useless_attributes.html) which automatically removes useless attributes for you, i.e. for example columns which only have one single value.

In general the followingvideo seriesmight be helpful:http://docs.www.turtlecreekpls.com/studio/getting-started/

You also should definitely check out the built-intutorialswhich can be found under “Questions” in the top right corner of the product.

Last but not least: these are the type of questions ouruser communityis more than happy to help you with as well. You can find it athttp://community.www.turtlecreekpls.com