Ticks Tick Labels And Grid Lines Astropy V6 1 4 The names are only available for specific celestial coordinate systems for all other systems, you should use the index of the coordinate (0 or 1). each coordinate is an instance of the coordinatehelper class, which can be used to control the appearance of the ticks, tick labels, grid lines, and axis labels associated with that coordinate. The wcs projection completely replaces matplotlib axis, see ticks, tick labels, and grid lines. hence you cannot use the matplotlib methods anymore, or at least you cannot expect them to have any effect on the actual plot. instead it would be required to use the methods of the wcs. so if ax = plt.subplot(projection=wcs) is a wcsaxessubplot, you may get the x axis as ax.coords[0] and the y axis.
Ticks Tick Labels And Grid Lines Astropy V7 1 Dev784 G7f259327a Astropy astropy , question 4 1752 april 7, 2025 hiding ticks and labels with a specified value astropy question 1 18 august 11, 2024 freely rotate wcs axis labels astropy astropy 0 325 june 26, 2023 question about calculating tick coordinates in astropy astropy sunpy , astropy , question 2 376 august 12, 2022 add " " sign for positive values in. Where to draw the tick labels. note that this will not work correctly if the frame is not rectangular. grid color color, optional the color of the grid lines (accepts any valid matplotlib color). grid alpha float, optional transparency of grid lines: 0 (transparent) to 1 (opaque). grid linewidth float, optional width of grid lines in points. (png, svg, pdf) interior ticks and tick labels # the tick labels for an overlay grid can be difficult to associate correctly with gridlines because the default locations at the edges of the rectangular frame may result in multiple gridlines intersecting an edge near the same tick label or too few gridlines intersecting an edge. Pixel coordinates # apart from the handling of the ticks, tick labels, and grid lines, the wcsaxes class behaves like a normal matplotlib axes instance, and methods such as imshow(), contour(), plot(), scatter(), and so on will work and plot the data in pixel coordinates by default.
Astropy Data Server (png, svg, pdf) interior ticks and tick labels # the tick labels for an overlay grid can be difficult to associate correctly with gridlines because the default locations at the edges of the rectangular frame may result in multiple gridlines intersecting an edge near the same tick label or too few gridlines intersecting an edge. Pixel coordinates # apart from the handling of the ticks, tick labels, and grid lines, the wcsaxes class behaves like a normal matplotlib axes instance, and methods such as imshow(), contour(), plot(), scatter(), and so on will work and plot the data in pixel coordinates by default. Using wcsaxes # initializing axes with world coordinates plotting images and contours ticks, tick labels, and grid lines overplotting markers and artists overlaying coordinate systems slicing multidimensional data controlling axes initializing wcsaxes with custom transforms using a custom frame. Method to set the tick and tick label parameters in the same way as the tick params() method in matplotlib. this is provided for convenience, but the recommended api is to use set ticks(), set ticklabel(), set ticks position(), set ticklabel position(), and grid().
Astropy Data Server Using wcsaxes # initializing axes with world coordinates plotting images and contours ticks, tick labels, and grid lines overplotting markers and artists overlaying coordinate systems slicing multidimensional data controlling axes initializing wcsaxes with custom transforms using a custom frame. Method to set the tick and tick label parameters in the same way as the tick params() method in matplotlib. this is provided for convenience, but the recommended api is to use set ticks(), set ticklabel(), set ticks position(), set ticklabel position(), and grid().