Scilab plot full#
Scilab plot software#
Scilab plot code#
Scilab plot series#

With the LaTeX command includegraphics and the primitive xstring, its also possible to add an image of the molecular structure (via the parameter g). The first two columns are the spectrum coordinates and the second two are the fragments coordinates, on which the numerical labels are put. The peak data are taken from and then organised in four columns. In this example, the acetylsalicylic acid (2-acetoxybenzoic acid) mass spectrum is considered. This plot type can be used to plot a mass spectrum.

Scilab plot code#

The code is partially based on the Scilab code written by Alex Carneiro (see ). At present, its not possible to automatically align the x axis and y axis labels to the respective axis orientation, since x_label.font_angle and y_label.font_angle are not specified. SciNotes is a powerful text editor and it also has interesting LaTeX capabilities (some examples will be shown in the following sections about impulse and ternary plots). Note that in Scilab, it is possible to use special characters directly in SciNotes, the built-in editor. The parameter col is used to scale the colours by aligning the data and the colour map. Each parallelepiped has a square base with the side w equal to 0.8 and the height z equal to the concentration. The plot is built by scanning the data matrix with two nested loops. Even in this case, some coding is required. The function hist3d can be an option, but this plot type is not very nice (its a bit ugly). Each measure is a point in this three-dimensional space. The parameters are three: concentration, month of the year and monitoring station. This example is about analysing particulate matter in urban air. This is easy to do because each area can be defined by a combination of the function plot and the primitive xfpoly, which is a filled polygon with the base at y=0 (see the parameter base). We can plot the data with the function bar or with an area plot (or a wide range of other tools, but this is only an example), which requires a bit of coding. These two columns are the per cent recoveries of 13 chemical compounds extracted from environmental samples using two different techniques.

Scilab plot series#

In this first example, we need to graphically compare two series of experimental data.

Scilab plot full#

Because the full code for each example is too long for a printed article, it’s freely (as in freedom and in beer) available at In this article, seven new (or almost new) plot types are covered with some practical applications, all made with Scilab 5.5.1 under Linux Mint 17 Xfce. To avoid any confusion, the word variable in the sense of a physical quantity (or chemical, graphical …) will be replaced by the word parameter. These words will be used only in reference to the keywords. Note that the keywords of Scilab are categorised as primitives, commands, variables, functions and xcos functions. So, its necessary to write some code to obtain them. Scilab has very good plotting capabilities, but some plot types are not available as primitives or functions.

Scilab plot software#

Scilab ( ) is open source software for numerical computation with a syntax similar to MathWorks MATLAB. Seven different types of plots used in seven different computations are explored, along with illustrations. The arguments of the legend() function are string variables for each line plot, and a number which represents the position where the legend is going to be displayed on the graphic window.This article discusses various types of plots based on mathematical computations done in Scilab, which is open source software for numerical computation. If we have multiple line plots on the same axes, we need to add also a legend, in order to distinguish between the lines. It has the same syntax as the labels, and displays the string argument as a centered text above the axes.

The arguments are string variables representing the text to be displayed.įor the title of the plot we use the title() function. The axes labels are added with xlabel() and ylabel() functions.

The default setting for the grid are: black color and dashed lines. The grid is displayed with the function xgrid(). For this we need to enter at the Scilab console the following instructions: To have a complete plot we need to add a grid, labels for both axes, a title and a legend. With every plot() function we add, new line plots are created on the same graphic window. Image: Multiple line plot on the same axes in Scilab