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kn_​example_​r_​csv_​read_​write

use R to read and write custom CSV files and read them back with different nodes

Read further about KNIME and CSV files:

CSV Reader (Labs)
https://hub.knime.com/knime/extensions/org.knime.features.base/latest/org.knime.base.node.io.filehandling.csv.reader.CSVTableReaderNodeFactory
=> you can use the "Autodetect" function
=> you can import multiple CSV files with the same structure at once

Demonstrates how to import several CSV files with the new CSV reader from sub folders at once
https://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_csv_import_multiple_csv_types?u=mlauber71

Force all columns to be read as strings (use KNIME nodes only)
https://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_csv_import_force_all_string_pure_knime?u=mlauber71

use R library(readr) to read (messy) CSV file into KNIME
https://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_r_read_single_csv_file?u=mlauber71

KNIME Nodes for Wide Data (many columns)
https://hub.knime.com/knime/extensions/org.knime.features.base.widedata/latest

use R to read and write custom CSV files and read them back with different nodes Read further about KNIME and CSV files:CSV Reader (Labs)https://hub.knime.com/knime/extensions/org.knime.features.base/latest/org.knime.base.node.io.filehandling.csv.reader.CSVTableReaderNodeFactory=> you can use the "Autodetect" function=> you can import multiple CSV files with the same structure at onceDemonstrates how to import several CSV files with the new CSV reader from sub folders at oncehttps://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_csv_import_multiple_csv_types?u=mlauber71Force all columns to be read as strings (use KNIME nodes only)https://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_csv_import_force_all_string_pure_knime?u=mlauber71use R library(readr) to read (messy) CSV file into KNIMEhttps://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_r_read_single_csv_file?u=mlauber71KNIME Nodes for Wide Data (many columns)https://hub.knime.com/knime/extensions/org.knime.features.base.widedata/latest maybe start with this (new) CSV reader node) dummy datawrite.table(knime.in, file = v_filename, sep = "|", col.names = TRUE, row.names = FALSE)export_01.csvuse autodetectlibrary(readr) read CSV fileforce all to stringcol_types = cols(.default = "c"library(readr) read CSV fileand guess formatsURIuse autodetectwrite.table(knime.in, file = v_filename, sep = "|", col.names = TRUE, row.names = FALSE)=> use data.table to transfer data to R Snippetread.table(file_location, header = TRUE, sep = "|")locate and create/data/ folderwith absolute pathsNode 92 Data Generator R Snippet String to URI CSV Reader(deprecated) CSV Reader R Source (Table) R Source (Table) File Reader(deprecated) Simple File Reader(deprecated) R Snippet R Source (Table) File Reader(Complex Format) Collect LocalMetadata Table Rowto Variable use R to read and write custom CSV files and read them back with different nodes Read further about KNIME and CSV files:CSV Reader (Labs)https://hub.knime.com/knime/extensions/org.knime.features.base/latest/org.knime.base.node.io.filehandling.csv.reader.CSVTableReaderNodeFactory=> you can use the "Autodetect" function=> you can import multiple CSV files with the same structure at onceDemonstrates how to import several CSV files with the new CSV reader from sub folders at oncehttps://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_csv_import_multiple_csv_types?u=mlauber71Force all columns to be read as strings (use KNIME nodes only)https://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_csv_import_force_all_string_pure_knime?u=mlauber71use R library(readr) to read (messy) CSV file into KNIMEhttps://hub.knime.com/mlauber71/spaces/Public/latest/kn_example_r_read_single_csv_file?u=mlauber71KNIME Nodes for Wide Data (many columns)https://hub.knime.com/knime/extensions/org.knime.features.base.widedata/latest maybe start with this (new) CSV reader node) dummy datawrite.table(knime.in, file = v_filename, sep = "|", col.names = TRUE, row.names = FALSE)export_01.csvuse autodetectlibrary(readr) read CSV fileforce all to stringcol_types = cols(.default = "c"library(readr) read CSV fileand guess formatsURIuse autodetectwrite.table(knime.in, file = v_filename, sep = "|", col.names = TRUE, row.names = FALSE)=> use data.table to transfer data to R Snippetread.table(file_location, header = TRUE, sep = "|")locate and create/data/ folderwith absolute pathsNode 92 Data Generator R Snippet String to URI CSV Reader(deprecated) CSV Reader R Source (Table) R Source (Table) File Reader(deprecated) Simple File Reader(deprecated) R Snippet R Source (Table) File Reader(Complex Format) Collect LocalMetadata Table Rowto Variable

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To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: m_lauber
Created at: 2020-09-16
On NodePit since: 2020-09-17
Last update: 2025-01-11
Created with KNIME version: v4.7.7
Tags: CSVimportreadreadr

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