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Merge - 'by' must specify a uniquely valid column - For Procedure
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2
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78
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March 1, 2021
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Merging Datasets and "Invalid number of breaks" error
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6
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260
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December 19, 2020
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Help merging various netCDF files
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3
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140
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December 11, 2020
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merging two data.frames
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1
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138
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October 15, 2020
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Combine Rows by a Pattern
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2
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127
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September 20, 2020
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Vlookup/Merge/Join Several CSV with No Headers in R
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1
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191
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August 22, 2020
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How can I group by variable in one dataframe and use a different variable to look into another dataframe and perform an operation?
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3
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160
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August 6, 2020
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Leaflet graph does not plot filtered data after merging spatial data frame based on user input
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3
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314
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July 24, 2020
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Complex uniting of 2 columns into one
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5
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243
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July 1, 2020
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Merging Data frames into single in array
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4
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179
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May 19, 2020
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Merging/ joining two datasets leads to crash
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1
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339
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May 19, 2020
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bring 2 datasets together
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5
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280
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April 20, 2020
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.csv contains improper quoting and variable class
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3
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171
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April 14, 2020
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Merging Data Frames
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11
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272
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April 9, 2020
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How to merge (by rows) more than two datasets with different columns
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8
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589
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March 13, 2020
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What do by.x and by.y do in merge()?
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4
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725
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March 2, 2020
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How to merge multiple dataframes with different names
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7
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265
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March 1, 2020
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Merging two csv files
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6
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2311
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January 6, 2020
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Need some help with function to read multiple csv files and calculate the mean() of columns ingoring NA
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4
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1260
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January 3, 2020
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Missing Data in one table from another
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4
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299
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September 20, 2019
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Matching similar values between data frames, difficult wrangling task
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9
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4183
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September 17, 2019
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Trouble merging subsets by ID - one subset is different (individual vs household)
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2
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460
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June 6, 2019
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ggplot choropleth map merging trouble
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5
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1728
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December 10, 2018
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Merging Two Data Frames
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6
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5716
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May 20, 2018
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Merging survey data with geographic data
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1
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606
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May 18, 2018
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