Coordinate transformation-based flow velocity field display method and device, and medium

The invention discloses a flow velocity field display method and device based on coordinate transformation and a medium, and the method comprises the steps: determining the speed information corresponding to different target feature points in a target flow velocity field at a target moment, and determining the flow velocity field size of the target flow velocity field based on the first base point coordinates of all target feature points at the target moment; based on the flow velocity field size and a preset canvas size, converting a first base point coordinate corresponding to the target feature point into a second base point coordinate in a canvas coordinate system; and based on the speed information, drawing a speed identification arrow corresponding to the target feature point in a canvas coordinate system. The velocity information in the velocity field is converted into the velocity arrows under the canvas coordinate system, so that the velocity measurement result can be observed conveniently and visual