# Removing Table Parts Just as the `tab_*()` family of methods lets you *add* components to a table, the `rm_*()` family lets you *remove* them. This is useful when you're handed a [GT](../reference/GT.md#great_tables.GT) object that already carries a header, footnotes, or spanners (perhaps from a shared helper function or a template) and you'd like to strip a component out rather than rebuild the table from scratch. Every `rm_*()` method returns the [GT](../reference/GT.md#great_tables.GT) object, so these calls chain like any other. To have something to remove, let's build up a table that uses several components at once. We'll take a small slice of the [gtcars](../reference/data.gtcars.md#great_tables.data.gtcars) dataset and give it a header, a stubhead label, a spanner, a footnote, and two source notes. ``` python from great_tables import GT, md, loc from great_tables.data import gtcars gtcars_mini = gtcars[["model", "mfr", "hp", "trq", "msrp"]].head(5) gt_tbl = ( GT(gtcars_mini, rowname_col="model") .tab_header(title="Five Cars", subtitle="From the gtcars dataset") .tab_stubhead(label="car") .tab_spanner(label="performance", columns=["hp", "trq"], id="performance") .tab_footnote(footnote="Horsepower.", locations=loc.body(columns="hp", rows=[0])) .tab_source_note(source_note="Source: the gtcars dataset.") .tab_source_note(source_note=md("Prices in *USD*.")) ) gt_tbl ```
Five Cars
From the gtcars dataset
car mfr performance msrp
hp trq
GT Ford 1 647.0 550.0 447000.0
458 Speciale Ferrari 597.0 398.0 291744.0
458 Spider Ferrari 562.0 398.0 263553.0
458 Italia Ferrari 562.0 398.0 233509.0
488 GTB Ferrari 661.0 561.0 245400.0
Source: the gtcars dataset.
Prices in USD.
1 Horsepower.
# Removing the Header The **Table Header** (the title and optional subtitle) is removed with the [rm_header()](../reference/GT.rm_header.md#great_tables.GT.rm_header) method. It takes no arguments and clears the entire header at once. ``` python gt_tbl.rm_header() ```
car mfr performance msrp
hp trq
GT Ford 1 647.0 550.0 447000.0
458 Speciale Ferrari 597.0 398.0 291744.0
458 Spider Ferrari 562.0 398.0 263553.0
458 Italia Ferrari 562.0 398.0 233509.0
488 GTB Ferrari 661.0 561.0 245400.0
Source: the gtcars dataset.
Prices in USD.
1 Horsepower.
# Removing the Stubhead Label The *stubhead label* is the label that sits above the table stub. It's removed with [rm_stubhead()](../reference/GT.rm_stubhead.md#great_tables.GT.rm_stubhead), which leaves the stub itself in place and takes away only the label. ``` python gt_tbl.rm_stubhead() ```
Five Cars
From the gtcars dataset
mfr performance msrp
hp trq
GT Ford 1 647.0 550.0 447000.0
458 Speciale Ferrari 597.0 398.0 291744.0
458 Spider Ferrari 562.0 398.0 263553.0
458 Italia Ferrari 562.0 398.0 233509.0
488 GTB Ferrari 661.0 561.0 245400.0
Source: the gtcars dataset.
Prices in USD.
1 Horsepower.
# Removing Source Notes Source notes live in the **Table Footer**. Calling [rm_source_notes()](../reference/GT.rm_source_notes.md#great_tables.GT.rm_source_notes) with no arguments removes all of them. ``` python gt_tbl.rm_source_notes() ```
Five Cars
From the gtcars dataset
car mfr performance msrp
hp trq
GT Ford 1 647.0 550.0 447000.0
458 Speciale Ferrari 597.0 398.0 291744.0
458 Spider Ferrari 562.0 398.0 263553.0
458 Italia Ferrari 562.0 398.0 233509.0
488 GTB Ferrari 661.0 561.0 245400.0
1 Horsepower.
To remove only *some* of the source notes, supply the `source_notes=` argument with a `0`-based index (or a list of indices) reflecting the order in which the notes were added. Here we drop just the first source note and keep the second. ``` python gt_tbl.rm_source_notes(source_notes=0) ```
Five Cars
From the gtcars dataset
car mfr performance msrp
hp trq
GT Ford 1 647.0 550.0 447000.0
458 Speciale Ferrari 597.0 398.0 291744.0
458 Spider Ferrari 562.0 398.0 263553.0
458 Italia Ferrari 562.0 398.0 233509.0
488 GTB Ferrari 661.0 561.0 245400.0
Prices in USD.
1 Horsepower.
# Removing Footnotes Footnotes are removed the same way through the [rm_footnotes()](../reference/GT.rm_footnotes.md#great_tables.GT.rm_footnotes) method. Called without arguments, all footnotes are removed. The `footnotes=` argument accepts a `0`-based index or a list of indices when you want to remove specific ones while keeping the rest. ``` python gt_tbl.rm_footnotes() ```
Five Cars
From the gtcars dataset
car mfr performance msrp
hp trq
GT Ford 647.0 550.0 447000.0
458 Speciale Ferrari 597.0 398.0 291744.0
458 Spider Ferrari 562.0 398.0 263553.0
458 Italia Ferrari 562.0 398.0 233509.0
488 GTB Ferrari 661.0 561.0 245400.0
Source: the gtcars dataset.
Prices in USD.
# Removing Spanners Spanners are removed with [rm_spanners()](../reference/GT.rm_spanners.md#great_tables.GT.rm_spanners), which takes away the spanner labels while leaving the underlying columns untouched. With no arguments, all spanners are removed. To target specific ones, pass their ID values to the `spanners=` argument. ``` python gt_tbl.rm_spanners(spanners="performance") ```
Five Cars
From the gtcars dataset
car mfr hp trq msrp
GT Ford 1 647.0 550.0 447000.0
458 Speciale Ferrari 597.0 398.0 291744.0
458 Spider Ferrari 562.0 398.0 263553.0
458 Italia Ferrari 562.0 398.0 233509.0
488 GTB Ferrari 661.0 561.0 245400.0
Source: the gtcars dataset.
Prices in USD.
1 Horsepower.
Spanners can also be removed by *level* using the `levels=` argument. Levels are numbered starting at `0` for the row of spanners closest to the column labels, increasing as you move upward. This is handy when a table has stacked (nested) spanners and you want to clear an entire tier at once. When both `spanners=` and `levels=` are supplied, only the spanners that match *both* conditions are removed. The `rm_*()` methods round out the table-building workflow: the `tab_*()` methods put components in place, and their `rm_*()` counterparts take them back out. Because each returns a [GT](../reference/GT.md#great_tables.GT) object, you can freely mix additions and removals within a single chain, which makes it easy to adapt a table that was created elsewhere to suit your needs.