For inline expressions, surround the markup with single dollar signs ($). highlight parts of a plot using the annotation function. existing plot. and border lines to the plot. "textbackgroundcolor", "textcolor", specifying the x and y coordinates of the two ends of the line. Now, when you continue to run ex1.m, our end result should look like Figure 1, with the same red “x” markers and axis labels. figure, rather than the current figure returned by gcf. Properties of the legend object may be manipulated directly by using Restore y-axis, so higher values are nearer the top. object. x and y must be two-element vectors "vback3"]. All of Octave's plotting functions use gnuplot to handle the actual graphics. You'd have to find the coordinates so that they will be placed where you want them. The automatic algorithm sets cmin to the minimum data value A plot must exist before legend is called. When the first argument is "minor" all subsequent commands "data1", "data2", …, "dataN". placed vertically or horizontally. Those objects some property names are duplicated: "vertical" (default) or "horizontal". of the figure has coordinates ‘[0 0]’ and the upper right hand corner The position of labels along the Vectors x and y specify the This answer was perfect for multi-line title but it did not answer the part of the question about multi-lined x-labelling (or y-label or z-label). the box. specifies the arrowhead coordinates. LaTeX labels in Matlab and Octave Very happy to've finally discovered the LaTeX interpreter option in Matlab labels this evening. determines the spacing between labels on a contour to be specified. GNU Octave. pos specifies the "position" property with the axes’ descendants. Note: If there are no tick marks for an axis then there can be no labels. Graphics handles to the text and line objects which make up the legend. calculation mode which is either "auto" or "manual". The third and fourth specify the limits for the y-axis, and the ... turns tic marks on for all axes and tic mark labels on for the y-axis only. If no Set the specified axes to have nice limits around the data or all if no Draw annotations to emphasize parts of a figure. Option 1: plt.xticks() plt.xticks() is probably the easiest way to rotate your labels. An optional list of property/value pairs can be used to change of the current figure with the "tag" set to "legend". A limited set of text Henry 15.1.3 Plot Annotations ----- You can add titles, axis labels, legends, and arbitrary text to an existing plot. controls the positioning of the colorbar. ‘[1 1]’. Axis Configuration (GNU Octave) Next: Two-dimensional Function Plotting, Up: Two-Dimensional Plots . The "userdata" property of the text objects contains the numerical Construct an ellipse. The optional parameter pos specifies the location of the legend Calling datetick sets the TickMode of the specified axis to 'manual'. See also: ylim, zlim, axis, set, get, gca. The limits argument should be a 2-element vector specifying the lower and "normal" Restore default aspect ratio. this axis rather than the current axes returned by gca. where it is HH:MM:SS:SSS [A or P]M [M]M/DD/YYYY. The axis function may be used to change the axis limits of an existing plot and various other axis properties, such as the aspect ratio and the appearance of tic marks. For me topic is more of interest cause I prefer resizable GUIs, so resizing is a typical job for all my gui object. Direction of the y-axis: "normal" is bottom to top. See also: contour, contourf, contour3, meshc, surfc, text. colorbar object. "head1length"/"head2length", Called without arguments the current color axis limits are returned. The xlim, ylim, and zlim functions may be used to I previously wrote about using the epslatex terminal in Gnuplot to generate beautiful plots for inclusion in a LaTeX document. rather than the current axes returned by gca. If the argument h is a handle to a contour group object, then label appearance of tic marks. If the first argument hax is an axes handle, then operate on this If the first argument hcb is a handle to a colorbar object, then Create a text object with text string at position x, y, legend works on line graphs, Multiple locations can be specified if x, y, (z) are in whatever font you are using in the rest of your document. The Octave has lots of simple tools that we can use for a better understanding of our algorithm. Moreover, The optional return value h is a graphics handle to the created text "linestyle", and "linewidth" properties to customize turns tick marks on for all axes and tick mark labels on for the y-axis only. "linewidth" properties to customize the rectangle background color Then, call the gca function to get the current axes, and set the the TicklabelInterpreter property to 'latex'. ["diamond" | "ellipse" | "plain" | With the input query "mode", return the current x-limit The axis function may be used to change the axis limits of an existing off for the remainder. position vector pos for others. 15.2.3 Plot Annotations. If it is omitted, the current grid state is toggled. Implementation Note: A legend is implemented as an additional axes object If "on" (the default) the box limits are fitted to the Show Hide all comments. Finally, the "fitboxtotext" property controls the actual extent of Is there anyway to rotate the ylabel on a plot and ensure that the label is still centered on the axis? This will plot the cosine and sine functions and label them accordingly in the legend. The function state input may be either "on" or "off". x-axis are set to these values and the mode is set to "manual". axes rather than the current axes returned by gca. The only "issue" is that it's using the "stateful" API (not the Object-Oriented API); that sometimes doesn't matter but in general, it's recommended to use OO methods where you can. and off for the remainder. returned by contour, contourc, contourf, and The following options control the aspect ratio of the axes. "xy" There are two low-level functions, gplot and gsplot, that behave almost exactly like the corresponding gnuplot functions plot and `splot'.A number of other higher level plotting functions, patterned after the graphics functions found in MATLAB version 3.5, are also available. You can add titles, axis labels, legends, and arbitrary text to an existing plot. The axis function may be used to change the axis limits of an existing plot and various other axis properties, such as the aspect ratio and the appearance of tic marks. Any help would be great. upper limits to assign to the first and last value in the colormap. Graphics handles to the plot objects which were used in making the legend. To remove a colorbar from a plot use any one of the following keywords for omitted, the current box state is toggled. For example. of the annotation. Specify the string used to label the x-axis of the current axis. The optional return value h is a vector of graphics handles to Specify the string used as a title for the current axis. Next: Multiple Plots on One Page, Previous: Three-Dimensional Plots, Up: High-Level Plotting. : xlabel (string): xlabel (string, property, val, …): xlabel (hax, …): h = xlabel (…) Specify the string used to label the x-axis of the current axis. You may use "backgroundcolor", "edgecolor", turns tic marks on for all axes and tic mark labels on for the y-axis only. contour line is chosen randomly. The FontSize property of the axes contains the axes font size. For example: A colorbar displays the current colormap along with numerical rulings The following options control the aspect ratio of the axes. See also: ylabel, zlabel, datetick, title, text. coordinates. If the "auto" option is given then automatic colormap limits are Besides line properties, the arrowhead can be customized using computed based on the data in the axis. a cell array of strings. If the first argument hax is an axes handle, then operate on this axis rather than the current axes returned by gca . You may use "facecolor", "color", "linestyle", and The index 1 marks the Note, if there are no tic marks for an axis, there can be no labels. If the first argument hax is an axes handle, then the colorbar is @anchor{doc-axis} Function File: axis (limits) Set axis limits for plots. "rectangle" | "vback1" | "{vback2}" | If the handles, Place the colorbar at the bottom of the plot. set(get(gca, 'YLabel'), 'Rotation',0) I find that the label is 'shifted up' the y-axis after rotation. Each has the same form. Plotting. The line and the arrowhead can be customized as for arrow annotations, and Turn tic marks on for all axes, or turn them on for the specified axes and contour3. Previously I'd been so frustrated when wanting to use something mathy like a partial derivative expression to label a plot axis, because while I can specify a few LaTeX-like things in there like partials and sub/superscripts: See also: xlim, ylim, zlim, daspect, pbaspect, box, grid. Construct a rectangle. The following options control the way axis limits are interpreted. All annotation objects share two properties: Valid annotation types and their specific properties are described You can add titles, axis labels, legends, and arbitrary text to an Place the colorbar outside the plot to the left. To learn more about the plot command, you can type help plot at the Octave/MATLAB command prompt or to search online for plotting documentation. given then the contours to label can be selected with the mouse. The arguments x1 and y1 define the arguments for the first plot and x1 and y2 for the second. set. If the first argument hax is an axes handle, then operate on as points or lines, their style, their colour, label, etc. The line and the arrowhead can be customized as for arrow annotations, but Construct an arrow with a text label at the opposite end from the arrowhead. x-axis. The following options affect the direction of increasing values on the axes. The label font size updates to equal the axes font size times the label scale factor. arrowhead coordinates. If "manual" is specified "equal" Force x-axis unit distance to equal y-axis (and z-axis) unit distance. The following options affect the appearance of tic marks. If it is With this background, here is how you plot a sine curve, and Figure 12 shows th… In this tutorial, we are going to learn how to plot data for better visualization and understanding it in the Octave environment. "xy" The line can be customized using "linewidth", "linestyle", plot and various other axis properties, such as the aspect ratio and the fifth and sixth specify the limits for the z-axis. You could delete all the default x-tick labels and then use your own with the text command. current plot. Reverse y-axis, so lower values are nearer the top. and edge appearance. the properties of the created text label. Query or set color axis limits for plots. the box background color and edge appearance. to customize the annotation appearance. Henry octave-3.2.2:2> plot (1:10) octave-3.2.2:3> ylabel ("y-label") octave-3.2.2:4> xlabel ("x-label") % Note no error message octave-3.2.2:5> close all octave-3.2.2:6> set (0, "defaultaxesposition", [0.13, 0.13, 0.775, 0.795]) octave-3.2.2:7> plot (1:10) octave-3.2.2:8> ylabel ("my y-label") octave-3.2.2:9> xlabel ("my x-label") octave-3.2.2:10> axes are specified. Construct a box with text inside. 2 Comments. By default, the axes font size is 10 points and the scale factor is 1.1, so the x-axis label font size is 11 points. Without any arguments, axis turns autoscaling on. "headlength", "headwidth", and "headstyle" This means that after zooming, panning or otherwise changing axis limits, you should call datetick again to update the ticks and labels. Contour labels are rotated to match the local line Multiple strings can be specified with a character matrix or Octave will delete the temporary files on exit, but if you are doing a lot of plotting you may want to clean up in the middle of a session. The best way to work with dates and times in MATLAB is to use datetime values, which offer more features than serial date numbers. ylim: two-element vector, def. Query or set the limits of the x-axis for the current plot. are drawn in an invisible axes, on top of every other axes. numeric values in the "clim" property are used for limits. properties, you may also use "horizontalalignment" and Turn tic labels on for all axes, or turn them on for the specified axes and off for the remainder. applied. If the argument "peer" is given, then the following argument is specified by the vector v. If the "manual" argument is Here the left one is bigger then the right one. can be given and are passed to the underlying text objects. The current plotting mode can be changed by using either "auto" I want to use it for my x-axis on my plots, and I have tried using datetick, datenum, and datestr and haven't been able to get any of them to work with this format. The vectors. See Text Properties for the properties that you can set. This example shows how to add a title and axis labels to a chart by using the title, xlabel, and ylabel functions. See also: xlabel, ylabel, zlabel, title, text, gtext, legend, colorbar. A cell array of strings of the labels in the legend. If passed a 2-element vector [x_lo x_hi], the limits of the rather than the current axes returned by gca. axis rather than the current axes returned by gca. "square" Force a square axis aspect ratio. Note, if there are no tic marks for an axis, there can be no labels. so that the color scale can be interpreted. You can add titles, axis labels, legends, and arbitrary text to an existing plot. To do so we had to remove ylabel(“”) from the code and add the label as plain text using text() (line 9 and 10) Remove axes and box. pos specifies the With one output argument, limits = axis returns the current The secret is that the epslatex terminal produces a combination of (1) EPS vector graphics and (2) TeX instructions to overlay all the text (axis labels, legends, etc.) Legend entries may be specified as individual character string arguments, a character array, or a cell array of character strings. The most basic plotting is using the plot()function, which takes the Cartesian x & y values. hobjs, are not specified then the legend’s strings will be associated "textmargin", "textrotation". In either case, coordinates are Further arguments can be provided in the form of prop/val pairs default is 144 points, or 2 inches. Place the colorbar at the top of the plot. Place the colorbar outside the plot to the right. The following options affect the direction of increasing values on the axes. labels or DisplayNames are available, then the label text is simply GNU Octave: Axis Configuration ... 15.2.1.1 Axis Configuration. For example: ylabel: graphics handle. function. An optional list of property/value pairs can be used to change the properties of the created text label.. Turn tic marks and labels on for all axes. orientation and centered on the line. Construct an arrow. first and second elements specify the lower and upper limits for the -Inf and Inf may be used to indicate that the limit should automatically be or "manual" as the argument. The following options affect the direction of increasing values on the axes. The optional return value h is a graphics handle to the created The optional return value h is a vector of graphics handles to the The allowed values are It also shows how to customize the appearance of the axes text by changing the font size. Called without arguments xlim returns the x-axis limits of the bar graphs, etc. See also: gtext, title, xlabel, ylabel, zlabel. See "rectangle" annotations for customization. modify the minor grid rather than the major grid. Data object. arguments may be used to specify various axis properties. Finally, arrows, text and rectangular or elliptic boxes can be added to It's a mess! Note, however, that some text property names are prefixed with By default, all contours are labeled. If the first argument hax is an axes handle, then plot into this axis, rather than the current axes returned by gca.. as follows: The optional parameter orient determines if the key elements are and "color" properties the same way as for line objects. Use the "string" property to change the text string. The created axes object has the extra property "location" which If the first argument hax is an axes handle, then plot into this axis, is taken from the DisplayName property of graphics objects. Supported values for "headstyle" property are: treated as the axes handle in which to add the colorbar. objects. The default is "normalized", which means the lower left hand corner Thanks. The optional input loc determines the location of the colorbar. "ij" Reverse y-axis, so lower values are nearer the top. Add labels to the contours of a contour plot. In my case, I would like to have a multi-lined label under a bar graph to give additionnal information on the figure. Supported colours are: k (black), r (red), g (green), b (blue), y (yellow), m (magenta), c (cyan), w (white). properties of the arrowhead at the first point in x and y The argument may be either "on" or "off". function. "position" property of the annotation. border lines are on. Valid values for loc are. Additional property/value pairs that are valid properties of text objects "text" to distinguish them from arrow properties: of the annotation. interpreted using the "units" property of the annotation object. value of the contour label. [0 1] Two-element vector [ymin ymax] specifying the limits for the y-axis. If the first argument hf is a figure handle, then plot into this By default, the grid is off and the of the annotation. Construct a double arrow. The LabelFontSizeMultiplier property of the axes contains the label scale factor. "verticalalignment" to position the text inside the box. "nolabel" Turn tic labels off for all axes. The optional return value h is a graphics handle to the created Specify the tick labels using LaTeX markup. You may build a default annotation by specifying only the type ygrid: {"off"} | "on" Control whether major y grid lines are displayed. Implementation Note: A colorbar is created as an additional axes to the An optional list of property / value pairs can be used to change the properties of the created text label. Optional property/value pairs may be used to control the appearance of the this axis rather than the current axes returned by gca. added to this axis, rather than the current axes returned by gca. A future version of Octave will eliminate the need to use temporary files to hold the plot data. The optional return value h is a vector of graphics handles to the created line objects.. To save a plot, in one of several image formats such as PostScript or PNG, use the print command. "nolabel" Turn tick labels off for all axes. Also notice how we brought the y label of the left axis ( sin(x) ) closer, compared to the previous plot. values outside this range are clamped to the first and last colormap below: Constructs a line. "label[xyz]" Turn tick labels on for all axes, or turn them on for the specified axes and off for the remainder. a character array, or a cell array of character strings. Create Simple Line Plot. axis limits. If the first argument hax is an axes handle, then plot into this axis, "textedgecolor", "textlinewidth", If the first argument haxis an axes handle, then plot into this axis, I think I will choose workaround #2 specific for OCTAVE doing redesign of several programs to handle both target systems. annotation object. using either x and y coordinates for line-based annotations or a Octave-Forge is a collection of packages providing extra functionality for GNU Octave. Next: Two-dimensional Function Plotting, Up: Two-Dimensional Plots   [Contents][Index]. Supported point styles are: +, *, o, x, ^, and lines are represented by -. The second point in vectors x and y However, the contours to label can be If the first argument hax is an axes handle, then operate on the delete_option: "delete", "hide", "off". "head1width"/"head2width", etc. If the first argument hax is an axes handle, then operate on this axis rather than the current axes returned by gca. The special values Turn tic labels on for all axes, or turn them on for the specified axes Place the colorbar inside the plot to the right. Similarly the axis limits of the colormap can be changed with the caxis The graphics handle of the legend object. properties. then the "climmode" property is set to "manual" and the 15.2.1.1 Axis Configuration. get or set individual axis limits. the text objects representing each label. For example: x = -10:0.1:10; plot (x, sin (x)); title ("sin (x) for x = -10:0.1:10"); xlabel ("x"); ylabel ("sin (x)"); text (pi, 0.7, "arbitrary text"); legend ("sin (x)"); The functions grid and box may also be used to add grid and border lines to the plot. Display a legend for the current axes using the specified strings as labels. created text objects. The argument limits should be a 2-, 4-, or 6-element vector. and cmax to the maximum data value. operate on this colorbar directly. Set the x-axis tick values to be multiples of pi by calling the xticks function. text. Otherwise you can select the type of annotation and then set its position the text can be customized using the same properties as text graphics Specify the string used to label the x-axis of the current axis. customize an existing annotation object. The following customizations are available using option: Place label text to the right of the keys (default). This is the default. Alternatively, Plot two sets of data with independent y-axes and a common x-axis. The contour levels are specified by the contour matrix c which is The legend label text is either provided in the call to legend or Use the "string" property to change the text string. To control the grid lines for an individual axis use the set Next: Multiple Plots on One Page, Previous: Three-Dimensional Plots, Up: High-Level Plotting   [Contents][Index]. pos specifies the "position" property text extent. current figure with the "tag" property set to "colorbar". Place the colorbar inside the plot to the left. Additional property/value pairs are passed directly to the underlying axes If the first argument hax is an axes handle, then operate on this objects properties are also available; Besides "font…" An optional list of property/value pairs can be used to change We need to rotate the axis labels... Let's go through all the ways in which we can do this one by one. (z) on the current axes. Legend entries may be specified as individual character string arguments, For example: The functions grid and box may also be used to add grid the contour group property "LabelSpacing" is available which Display a legend for the current axes using the specified strings as labels. Graphics handle of the y label text object. This can be used with the set function to The vector argument specifying limits is optional, and additional string the appearance of the created title text object. In MATLAB or Octave, my data has the following format for date/time values: 12:00:34.626 AM 2/26/2017. this plot rather than the one in the current axes returned by gca. Using. entries. Additionally, you may pass, as how to plot, i.e.