Icon

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

Nodes

Extensions

Links

Download

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: 2024-04-26
Created with KNIME version: v4.7.7
Tags: CSVimportreadreadr

Deploy, schedule, execute, and monitor your KNIME workflows locally, in the cloud or on-premises – with our brand new NodePit Runner.

Try NodePit Runner!