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[DOC File]John Miyamoto - University of Washington
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John Miyamoto Useful R Commands (Top); Useful R Information Sources (Bottom) Contents (Cntrl-left click on a link to jump to the corresponding section)
pandas select unique rows

[DOC File]R notes for BIOL 7083, Community Ecology, Fall 2003
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The functions length(), sample(), sort() & unique() together can provide useful re-sampling, boot-strapping, jack-knifing, and randomization procedures, including rarefaction. Here, for example, is a one-line set of commands that returns the number of species within a sample of x stems chosen at random from the entire data set:
pandas dataframe unique row

[DOCX File]Technology - Winona State University
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The command names() used above will display the column/variable names of a dataframe. The Sales variable in the BevSales dataframe is the time series { y t } and it can be plotted versus an Index (i.e. time) by using the command plot().
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[DOCX File]Assumption University
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a pandas dataframe is a two (or more) dimensional data structure – basically a table with rows and columns. The columns have names and the rows have indexes. An example of …
python dataframe unique row

[DOCX File]Washington State University
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There is also now a blue triangle. You can click this triangle to view more information about the values in the dataframe. This shows us that the dataframe has kept the values differentiated in their data types. We have numeric data and factor data in the same dataframe. Importing your own data. R can read data in a few different formats.
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[DOC File]Kiwi.mendelu.cz
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Adding Rows 25. Aggregating Data 25. Reshaping Data 25. Transpose 25. Reshape Package 25. ... A dataframe is more general than a matrix, in that different columns can have different modes (numeric, character, factor, etc.). ... (where k is the number of unique values in the nominal variable), and an internal vector of character strings (the ...
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Easy and quick approach to develop complex pivot table ...
The new dataframe should align with the dataframe (3) indexes/levels. Get the index values for each of the levels and then form a tuple using zip method. Pass the tuple list to MultiIndex.from_tuples pandas method and build the index/dataframes. Concatenate the newly formed dataframes to dataframe (2) to form a consolidated dataframe (9) Sort ...
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[DOCX File]STAT 19000 Projects - Purdue University
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STAT 19000 Projects. Topics: R, SQL, and associated tools. Motivation: Practice, practice, practice. Continuing to learn about and use the tools we’ve addressed this …
pandas find unique rows

[DOCX File]Combining Multiple Tables
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Combining Multiple Tables. Today we will start to look at the nycflights13 data tables. You can think of this dataset as if it was a spreadsheet with multiple spreadsheets within a workbook.
pandas select unique rows

John Miyamoto - University of Washington
Return subsets of vectors or data frames which meet conditions. It achieves the same purpose as entering boolean conditions in dimensions of a matrix or dataframe, but it's syntax can be simpler or more transparent. Important: 'subset' drops cases that are missing on the index variable, whereas brackets includes these cases as rows of NA's.
pandas dataframe unique row

Unique rows in a dataframe