how do you save an image?

[rafaborneo]

once an image has been generate (say a pie chart with the node pie node/donut chart) how do you save it as png jpg or whatever (save the image)

[ipazin]

Hello @rafaborneo,

and welcome to KNIME Community! Looks like you need Image Writer (Port) node.

Image Writer (Port)

For multiple images in column you can use Image Writer (Table) node.

Also take a look at this topic:

Images as an output

I hope you are having a nice day. Ones again a strange question… Several nodes of KNIME, like Bar chart, for example, generate images as an output. I know how to add these images to the report – it works fine and easy. But what if I need this image in another application? How can I get the path to the image file? I tried to dig in the folder of the workflow, but surprisingly I haven’t found this picture Is this something doable or I misunderstand the logic?

Br,
Ivan

[rafaborneo]

Thnak you Ipazin. Indeed, the Image writer node alowed me to save the svg image to a file. Now I can convert it to png, jpg or whatever format i need. Againg thanks

[ipazin]

Hello @rafaborneo,

glad it helped. With Renderer to Image node you are able to have it as png while with Image Writer node from KNIME Image Processing extension there are various formats available.

Br,
Ivan

[bruno29a]

Hi @rafaborneo , there are some answers for rendering images in this thread:

Binary Object to Image

Hello, I’m fetching Images from an API and I receive them base64-encoded. Using the Palladian extension I can convert the base64-encoded string to a Binary Object column. However I would like to convert those columns to an “Image” column type. Is that possible? I have a workaround that consists of saving the images on a file system and read them back into the workflow with a “Image Reader” node but that’s quite inefficient. Best regards, Sébastien

You can play around with the different experiments in the workflow there, and then add the Image Writer to whichever works the best for you.