Introduction

KNIME Hub is the place where you can search for nodes, extensions, components, and workflows made available by the community.

You can use these as blueprints and building blocks in KNIME Analytics Platform, and build workflows to solve your data science use cases.

KNIME Hub can also be used to upload and organize workflows in a central place, and to collaborate with other users on your projects.

Via KNIME Hub you can:

  • Find workflows, components uploaded by KNIME Community

  • Upload and organize your workflows and components in projects

  • Create and manage projects

  • Collaborate with other users on your projects

KNIME Hub as a repository

Not only KNIME Community Hub serves as a repository for nodes, components, workflows, and extensions, ready to use in KNIME Analytics Platform via an easy drag & drop, but also you can use KNIME Community Hub to share your workflows with the KNIME Community or to store and organize your material in a private space.

Create a user account

First, if you do not have one already, create a user account. Go to KNIME Hub, click Sign in on the top right corner of the page, and then select Create account. Fill in the required information and click Create new account. Now you can sign in with your account. Click the user icon on the top right corner of KNIME Hub and select Profile from the menu to have access to your profile page. Here you can have an overview of the workflows and components you published, the extensions you published in case you have developed any of those, and the likes received. Also, you will have a list of the items you liked on KNIME Hub.

KNIME Hub spaces

From your profile page or by clicking your profile icon and selecting Spaces you will have access to the KNIME Hub spaces that are linked to your user account. A space is a KNIME Hub repository where you can store and share your workflows and components. When you register and sign in KNIME Hub two spaces will be automatically created. These are a private space and a public space, which have different access permissions. You can manage your spaces by changing their name or adding a description to them. You can upload your items from KNIME Analytics Platform to the spaces you have access to. Moreover, you can create new spaces, both private and public. Finally, you can add contributors to your public spaces. All these functionalities will be explained in the following paragraphs.

Access permissions of spaces

You are the owner of your spaces. Each space is linked and assigned to a specific user.

Spaces can be private or public:

  1. A private space is only accessible and manageable by your user account. Here you can store various types of items like workflows, components, or data.

  2. A public space, instead, is visible to the entire KNIME Community where you can share your workflows and components. Everyone will then be able to download them, drag & drop them to their KNIME Analytics Platform and use it, as well as like your spaces or items, or copy a link to your space and share it with others.

It is also possible to switch a space from private to public and vice versa. To do so go to the private space you want to make public, click the three dots on the top right part of the page and under Visibility select Make public (or vice versa select Make private).

img change space visibility
Figure 6. Change the visibility of a space on KNIME Hub

Manage your spaces

You can manage your spaces at any point in time by going back to the space page.

You can change the space’s name by going on the space page and clicking the title. Insert the new name in the title field and click the yellow tick button or press Enter to save. Click the x button instead to discard your changes.

img change space name
Figure 7. Change the name of a space

You can also add a description to your space by clicking Add description at the bottom of the space page. Again click the yellow tick button or press Enter to save your changes, or the x button to discard them.

img add description space
Figure 8. Add a description to a space

The description will be shown in the overview of your spaces in the corresponding space tile.

Create a new space

You can create a space from your profile’s spaces overview. Here, the spaces you have access to are shown, ordered by the latest update. Go to the last tile Create new space and select if you want to create a Private space or a Public space. You can choose a name for the space and the space will be created.

Delete a space

To delete a space you can go to the space page, click the three dots on the top right and select Delete space. You will be asked to insert the name of the space.

img delete space
Figure 9. Delete a space from KNIME Hub

Connect to KNIME Hub

You can access KNIME Hub from the KNIME Hub mount point and upload your workflows and components directly from your local KNIME Analytics Platform instance to KNIME Hub.

KNIME Hub mount point

You can connect to your KNIME Hub account on KNIME Analytics Platform on the KNIME Explorer, using the My-KNIME-Hub mount point.

To do so go into the KNIME Explorer, expand the My-KNIME-Hub mount point, and double click to connect to KNIME Hub.

img connect to hub from ap
Figure 10. Connect to KNIME Hub from KNIME Analytics Platform

You will be redirected to the sign in page if you are not connected in the current session already.

Once you are signed you will see all your spaces in the KNIME Explorer under the My-KNIME-Hub mount point.

img hub mountpoint connected
Figure 11. A user connected to KNIME Hub from KNIME Analytics Platform

Here you can perform different types of operations on:

  • Spaces: you can create a new space, change the name or delete an existing space. You can also open the space page on KNIME Hub or copy the link to the space. To do this right-click the space from the KNIME Explorer and select the desired option from the context menu that opens.

  • Items:

    • Upload items to your KNIME Hub spaces, download, move, delete, or rename your items. More information about this functionality is provided in the next section.

    • Open workflows as local copy or on KNIME Hub, or copy their URL. To do so right-click the desired item and select the options from the context menu.

    • Create workflow groups, which are subfolders that you can use to organize your items in the space. To do so right-click the space and select New Workflow Group…​ from the context menu.

Upload items to KNIME Hub

Once you are connected to your KNIME Hub account from KNIME Analytics Platform you can upload the desired items to your KNIME Hub spaces.

You can upload workflows or components to any of your spaces by:

  • Dragging & dropping the item from your local mount point to the desired location in the KNIME Hub mount point, or by

  • Right-clicking the item from KNIME Explorer and selecting Upload to Server or Hub from the context menu. A window will open where you will be able to select the location where you want to upload your workflow or component.

    img deploy to hub
    Figure 12. Upload a local item to your KNIME Hub mount point

Please notice that if the items are uploaded to a public space they will be available to everyone, hence be very careful with the data and information (e.g. credentials) you share.

Move items within KNIME Hub

You can move items that you uploaded to KNIME Hub to a new location within the space that contains the item or to a different space that you have access to. To do this you need to be connected to the KNIME Hub mount point on KNIME Analytics Platform. You can then move the items within KNIME Hub just by dragging the item in the KNIME Explorer.

Delete items from KNIME Hub

You can also delete items that you uploaded to KNIME Hub. To do so you can:

  • Connect to KNIME Hub mount point on KNIME Analytics Platform. Right-click the item you want to delete and select Delete…​ from the context menu

  • From KNIME Hub, sign in with your account and go to the item you want to delete. Click the three dots on the top right of the page and select Delete workflow.

    img delete item from hub
    Figure 13. Delete a workflow from KNIME Hub

Collaboration on KNIME Hub

KNIME Community Hub is also the place where you can collaborate with the KNIME Community. Once you have created your profile and uploaded your items in your public spaces you can share them with others, you can remain engaged in other people’s work by liking items or leaving a comment. Finally, you can also add other users from the KNIME Community as contributors to your public spaces. They will be able to access your space from their KNIME Hub profile and from their KNIME Hub mount point on KNIME Analytics Platform, download, and upload workflows or components. Add contributors to your spaces to collaborate on a project and keep all workflows always accessible in one place.

Like items on KNIME Hub

If you find an item on KNIME Hub that has been very useful for you or that you particularly like you can leave a like by clicking the heart icon on the top right of the page. All the items you liked will be shown on your user profile under Overview. See how much the KNIME Community has been engaged in specific items by looking at the number of downloads and likes that a specific item has received.

img kudos downloads
Figure 15. Number of downloads and likes of an item on KNIME Hub

Discussion

You can discuss a specific workflow on KNIME Community Hub in the session Discussion of the workflow page.

If a discussion has not been started yet you can click Start Discussion, or Continue Discussion in case you want to participate in a discussion that has already started.

You will be redirected to the respective discussion thread on KNIME Forum.

Contributors

You can add any other user of KNIME Community as a contributor to any of your public spaces.

To add a user as a contributor to a public space go to the space and click the pencil tool close to your profile icon.

img add contributor
Figure 16. Add a contributor to a public space

In the Manage contributors panel that opens you can add contributors by inserting their KNIME Hub user name. Then click Add and Save changes.

img manage contributors
Figure 17. Manage contributors on a public space

In the same panel, you can also manage the contributors. Click on the bin icon to remove a contributor from the space.

When you are added as a contributor to a space you will be able to see the space under Spaces in your profile page and also listed in your KNIME Hub mount point from KNIME Analytics Platform.

Contributors have edit rights for the space they are added to. They can add and edit workflows or components on the space. They do not have the same rights that the owner of the space has. Only the owner of a space can change the space name or change the space visibility to private.

Please notice that since contributors can only be added to public spaces, the contributors will not have access to the space anymore in case the space visibility is changed from public to private.