Houdini 19.0 Nodes TOP nodes

CSV Output TOP node

Writes work item attributes to a CSV file.

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Since 17.5

This node allows a CSV file to be created from work item attributes and result data. Data queries can be added to specify which data from the work item should get written to the outputted CSV file.

Normally one row will be written for each work item in the upstream item. For example, if the node generates from a single upstream item, there will only be one row in the CSV file. If the node generates from a partition which contains 10 work items, the CSV file will contain 10 rows. Setting Multiple Values per Query to Add Rows may result in multiple rows being generated for a given item.

The opposite of this node (create work items from rows of a CSV file) is the CSV Input node.

Parameters

Generate When

Determines when this node will generate work items. You should generally leave this set to “Automatic” unless you know the node requires a specific generation mode, or that the work items need to be generated dynamically.

All Upstream Items are Generated

This node will generate work items once all of the input nodes have generated their work items.

All Upstream Items are Cooked

This node will generate work items once all of the input nodes have cooked their work items.

Each Upstream Item is Cooked

This node will generate work items each time a work item in an input node is cooked.

Automatic

The generation mode is selected based on the generation mode of the input nodes. If any of the input nodes are generating work items when their inputs cook, this node will be set to Each Upstream Item is Cooked. Otherwise, it will be set to All Upstream Items are Generated.

File

CSV File

Specifies the output path of the CSV file.

File Tag

Specifies the file tag for the result.

Format

Quoting

Specifies how column values will be quoted. The CSV convention is that values can optionally be surrounded with quotes. Quoting is necessary if the value contains a quote, line separator or column separator character. However some software requires more or less quoting.

Minimal: Values will only be quoted if they contain quote, line separator or column separator characters.

Non Numeric: All non-numeric (string) values will be quoted. This is the default.

All: All values will be quoted.

None: No values will be quoted. However quotes, line separator and column separator characters will be escaped with a quote character.

Column Delimiter

When enabled, specify a character to use to delimit columns in the file. Typically this is a comma or tab character.

Write Header

Specifies whether the node should write a header to the CSV file. If this is enabled, a header row will be written to the CSV file where each header is the name of the attribute or the result data tag.

Data

Attributes to Write

Selects how to specify the attributes to be written to the CSV file.

By Data Queries

Select this to specify work item attributes by the Data Queries multiparm. The order of the multiparm will be the order of the columns in the file.

By Column Attribute

Select this to specify an attribute from which to read the names of attributes to dump to CSV. The attribute should be a string array attribute which contains names of attributes on the workitems. The order of the names will be the order of the columns in the file.

By Attribute Pattern

Select this to specify work item attributes using an Attribute Pattern.

Missing Attribute

Determines how the node should handled missing attributes on work items.

None

Missing attributes are ignored

Report Error

Missing attributes cause the node to report an error, and fail to generate work items

Report Warning

Missing attributes cause the node to report a warning, and continue generating work items

When Multiple Values

If there are multiple values found for the given query, how they should be written. For example if the query is “file/geo”, there may be multiple results for a given item. Since

Add Rows

An extra row should be written for each value returned.

Add Columns

Each value will be written as a new column.

Column Attribute

When Attributes to Write is set to By Column Attribute, this parameter specifies the name of the work item attribute that contains the list of attributes to write to the CSV file.

Attribute Pattern

When Attributes to Write is set to By Attribute Pattern, this parameter species the Attribute Pattern used to determine which attributes are written to the CSV file.

Attribute Name / Tag

This parameter is the actual query that will be performed on the upstream item. It can be either an attribute name or a file tag.

The position of this parameter within the multi-parameter list determines the column that the data will be written to.

Examples

WriteCSV Example for CSV Output TOP node

This example demonstrates how to create a csv file from pdg work item’s attributes.

See also

TOP nodes