plotter.drawables.images¶
class Image(Drawable)¶
Class for creating an image to be drawn on a canvas.
Attributes:
| Name | Type | Description |
|---|---|---|
data |
NArray2D[Any] | NArray3D[Any] | The 2D or 3D numpy array containing the image data. If 3D, the third dimension must contain 3 (RGB) or 4 (RGBA) values. |
mappable |
AxesImage or None | The image artist returned by imshow, populated after draw runs. Pass it (via this Image) as a Colorbar's source. |
Raises:
| Type | Description |
|---|---|
| ValueError | If the data is not a 2D or 3D array. |
| ValueError | If the third dimension of a 3D array is not 3 or 4. |
| ValueError | If the data is not real. |
Defined attributes:
data: NArray2D[Any] | NArray3D[Any]mappable: AxesImage | None
Methods¶
draw¶
Draws the image on the canvas.
Args:
| Name | Type | Description |
|---|---|---|
canvas |
Canvas | ZoomInset | The canvas (or zoom-inset panel) to draw the image on. |
plot_n |
int, optional | The index of the subplot to draw on. Defaults to 0. |
Keyword Arguments:
| Name | Type | Description |
|---|---|---|
colormap |
str | The Matplotlib colormap to use. Defaults to "gray". |
log |
bool or tuple[bool, float] | Controls the scale of the colormap. - bool: True for logarithmic scale.- tuple: (True, float) for a 'symlog' scale with a linear range of float. This parameter is ignored if the data is RGB(A). Defaults to False. |
v_range |
tuple[float, float] | The minimum and maximum intensity values, applied regardless of log. Ignored if the data is RGB(A). Defaults to (None, None). |
aspect |
str | The aspect ratio of the axes. equal for squared pixels, auto for a squared image. Defaults to "equal". |
origin |
str | The placement of the [0,0] element of the data. upper for the top-left, lower for the bottom-left. Defaults to "upper". |
limits |
list[float] | The limits of the x and y axes in the format \[left, right, bottom, top\]. Defaults to None. When drawing into a ZoomInset with limits left as None, data is instead expected to be the same full-resolution array shown on the source subplot: it gets automatically cropped and placed to match the panel's requested region. |