Direct Graphics Display Tips
Visit the Coyote Plot Gallery for graphics code and links to additional graphical information.
Line Plot Tips
- How do I create a graphic with a specified aspect ratio?
- How can I add a second, logarithmic axis to my plot?
- How can I create a plot with irregular tick spacing and values?
- How can I create a polar plot with axes through the center?
- I'm trying to do yada yada with log axes and it's not working. What am I doing wrong?
- I found the error bar routines in IDL, but can I plot error bars in the X direction, too?
- Is it possible to get the X axis labels on top of the plot instead of at the bottom?
- How do I fill the area under a curve with a color?
- Is there any way to change the text orientation of axis labels?
- Is there a way to plot the wave length on one axis and the corresponding wave number on another?
- I'd like to make a sort of stacked ladder plot. Can this be done in IDL?
- There is no room for a title on my plot. What can I do?
- I want to plot pressure on the Y axis, but I want the data range reversed. How do I do that?
- Is there a way to label minor tick marks on a logarithmic axis?
- Can you show me how to display a colored background inside my plot axes?
- How come my minor tick marks disappeared?
- Why does my sine plot look so lousy in IDL?
- Is there a way to draw a transparent polygon over my line plot?
- How can I include a grid on my line plot in IDL?
- How can I draw a multi-colored line in an IDL graphics plot?
- Can you show me how to draw a box and whisker plot in IDL?
- Instead of using symbols, can I use numbers to label my plot?
- Is there a good replacement for the Plot command?
- Is there a good replacement for the PlotS command?
- Is there a good replacement for the Oplot command?
- Yikes! Changing the X range of my plot affects the Y range. Is this a bug?
- Can you show me how to create an anisotropy pie plot in IDL?
- Can you show me how to create a 2D scatter plot.
- Do you have any tools for zooming into and out of line plots?
Contour Plot Tips
- How do I contour irregular data on a map projection?
- There is a hole in my filled contour plot, especially noticable when I make a PostScript file. Why?
- My filled contour plot colors look great on the display. But three contours are gray in my PostScript output. Why?
- Why doesn't the NLEVELS keyword to the CONTOUR command give me the correct number of contour levels?
- The colors on my filled contour map projection are completely wrong. What's going on?
- Isn't there a way I can solve all my Contour plot problems?
- Is there a good replacement for the Contour command?
- How can I get rid of this gap in my filled contour plot on a map projection?
- Compare filled contour plots in different graphics systems.
- Can you show me how to display a filled contour plot on a map projection?
- Contouring with CELL_FILL is taking forever! Is there a way to speed it up?
- Can you show me how to use Out-of-Bounds colors with filled contour plots?
- How do I output a contour plot with a color bar using the Output keyword?
- What is the relationship between filled contour values and colors in the color bar?
- How can I make missing data look, well, missing in filled contour plots?
Surface Plot Tips
- Is there a good replacement for the Surface command?
- Is there a good replacement for the Shade_Surf command?
- Is there a powerful Surface command replacement that works like the Surface command I'm used to?
- Is there a good replacement for the Surface command?
- Is there a good replacement for the Shade_Surf command?
- Is there a powerful Surface command replacement that works like the Surface command I'm used to?
Specialized Plot Tips
- Can you show me how to create a Dot Plot in IDL?
- Can you show me how to create a Polar Plot in IDL?
- Can you show me how to create a plot within another plot in IDL?
- Can you show me how to create a Transparent Polygon Plot in IDL?
- Can you show me how to create a Density Plot with contours in IDL?
- Can you show me how to create a StreamFunction Plot in IDL?
- Can you show me how to create an Anisotropy Pie Plot in IDL?
- Can you show me how to create a Box and Whisker Plot in IDL?
- Can you show me how to create a Google Map Plot in IDL?
- Can you show me how to create a OpenStreet Map Plot in IDL?
- Can you show me how to create a Lidar Range Plot in IDL?
- Can you show me how to create a Lidar Track Plot in IDL?
- Can you show me how to create a Google Earth Plot in IDL?
- Can you show me how to create a AVI Movie Plot in IDL?
- Can you show me how to create a MPG-4 Movie Plot in IDL?
- Can you show me how to create a Taylor Diagram in IDL?
- Can you show me how to create a Wind Rose diagram in IDL?
- Can you show me how to create a Sun Symbol in IDL?
General Plotting Tips
- How do I overplot data on a !P.MULTI plot?
- How do I position plots on the display?
- How do I position images on the display?
- How do I turn axis labelling off?
- Why don't graphics windows resize smoothly on my Windows machine?
- How do I leave room for a title when plotting multiple plots?
- How can I create a circle in IDL?
- How do I draw a rubberband box in a regular graphics window?
- How can I print the contents of the current graphics window?
- How can I tell if a graphics window is still open and available.
- Can I force IDL to use exponential axis annotation?
- I finally got my cheapskate boss to update IDL, only to find my favorite RDPIX program doesn't work. Help!
- What is the best way to make a scientific animation in IDL?
- Help! I just want to center my plot on the page with the PRINTER device. Is this possible!?
- I'd like to cut and paste a graphics window from IDL to Powerpoint. Can this be done?
- How do I get nice looking fonts in the Z-Buffer?
- Can I make a JPEG file of a line plot without opening a graphics window?
- What do people use to overplot vectors on their graphics plots?
- How can I create a color (JPEG, TIFF, PNG, BMP) image from an IDL graphics window?
- Have you noticed odd cursor behavior with Mac OS X?
- Can you show me how to display an image with a logarithmic color bar?
- Is there a routine in IDL for clipping polygons?
- How can I display an image with a log-linear aspect ratio in IDL?
- Can you show me how to obtain the location and value of a displayed image?
- What is the best way to produce IDL graphics output for Web or Powerpoint display?
- How can I interactively annotate a plot window in IDL?
- Can you show me how to create a sun symbol in IDL?
- Can you show me how to display a function of two variables as an image?
- Why is the first graphics window in my IDL session always blank?
- How can I create an Angstrom sign?
- How can I create a greater-than-or-equal-to symbol?
- How can I create a less-than-or-equal-to symbol?
- How can I create a degree symbol?
- How can I create a not-equal-to symbol?
- How can I create a prime symbol?
- How do I add a legend to a graphics window?
- How can I create a graphics window with a white background?
- Why does the NASA AL_Legend command display incorrect colors?
- Can you show me how to create polar wind vector plots?
- What is the best way to create multiple plots in IDL?
- Do you have a Coyote program for drawing velocity vectors on a map or plot?
- What's up with the odd direct graphics behavior in IDL 8.3?
Graphics Display Tips (3D)
- How do I create 3D axes?
- How do I add 3D axes to a rendered isosurface?
- How do I display a particle trajectory in 3D space?
- How do I create a 3D scatter plot?
- How can I exaggerate the Z axis of a surface plot?
- How can I grid 3D spherical data to view with SLICER?
- How can I draw a surface plot with axes through the origin?
- How can I shade my surface plot according to its elevation?
- How can I create a semi-transparent surface in IDL?
- Why can't I use the [XY]Range keywords to display just a portion of a surface?
- How can I display my XYZ data as a surface?
- Can you show me how to create a 3D representation of a surface from image ROIs?
Histogram Display Tips
- How can I make a histogram plot that looks like a histogram plot?
- How can I make a histogram plot with logarithmic bins?
- How can I fit a Gaussian to a histogram plot?
- How can I create overlapping, transparent histogram plots?
Image Display Tips
- Is there a device independent, color model independent replacement for the TV and TVSCL commands?
- How can I plot an image profile along any arbitrary line in an image?
- How do I interactively adjust the contrast/brightness of an image using direct graphics?
- How do I interactively adjust the contrast/brightness of an image using object graphics?
- How can I convert an RGB image to a gray-scale image?
- Can you show me how to draw a boundary around a region of interest?
- I'd like to create an ROI mask for my image. How do I do it?
- How do I fit an ellipse to a region of interest?
- "Pixel-interleaved. Band-sequential..." Just tell me this: Where does the 3 go?
- How you show me the IDL Way to turn an 8-bit color image into a 24-bit image?
- How can I add a blend two images together so it appears one image colors the other?
- Is there an easy way to display a maximum intensity projection of an image?
- How can I display a transparent image in IDL?
- How can I interactively annotate an image in IDL?
- How can I interactively query an image in IDL?
- How do you set up a map coordinate space so you can draw map boundaries and grids on an image?
- How can I leave room for colorbars when I display multiple images with cgImage?
- How can I brighten up my dark, dull MODIS reflectance images?
- How can I partition image values into distinct colors for display?
- How do I create a transparent image in IDL?
- Does Congrid resize images correctly?
- Can you show me how to work with transparent images and cgImage?
- How can I create multiple transparent images in a PostScript file?
- How can I add Poisson noise to an image in IDL?
Colorbar Display Tips
- How can I leave room for colorbars when I display multiple images with cgImage?
- How do I display a colorbar with a log-scaled image?
- How do I add a color bar to my graphics plot?
- How can I annotate cgCOLORBAR with my own labels?
- Your nice cgCOLORBAR program won't display my colors. Why not?
- Can you show me how to display an image with a logarithmic color bar?
- When I use your cgCOLORBAR program how come there is a dark line in the color table representation?
- How can I build a discrete color bar with the labels centered on the colors?
- How do I make cgCOLORBAR to use floating point labels?
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1996–2018 Fanning Software Consulting, Inc.
Last Updated: 12 January 2012