Re: [Scilab-users] using csvRead

2016-10-21 Thread jean-philippe grivet
Both vi and emacs can handle vary large files. You could use either to replace all separatots by commas and then use csvRead. Le 15/10/2016 15:45, Samuel Gougeon a écrit : Hello Le 14/10/2016 00:08, Philipp Mühlmann a écrit : Dear Scilab users, having a data file (*.cvs) containg following

[Scilab-users] Radon transform

2017-11-15 Thread Jean-Philippe Grivet
Hello, Does an implementation of the Radon transform exist in Scilab, similar to the Matlab "radon" function ? Would anybody be willing to share a homemade version ? Thank you for your input JP Grivet --- L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel

Re: [Scilab-users] orthogonal polynomials

2018-06-09 Thread Jean-Philippe Grivet
JP Grivet Le 09/06/2018 à 12:11, Samuel Gougeon a écrit : Hello, Le 06/06/2018 à 16:46, Jean-Philippe Grivet a écrit : Hello, I wish to use orthogonal polynmials within Scilab. Axxording to "ttps://atoms.scilab.org/toolboxes/Ortpol",  I do atomsInstall('Ortpol')

[Scilab-users] orthogonal polynomials

2018-06-06 Thread Jean-Philippe Grivet
that it is available for Scilab 6.0 on Windows. If it is, run atomsSystemUpdate() before trying atomsInstall(..) again. Where did I go wrong ? Is there a workaround ? Thank you in advance for your help. Jean-Philippe Grivet --- L'absence de virus dans ce courrier électronique a été véri

Re: [Scilab-users] Stacked 2D plot in 3D

2018-02-05 Thread Jean-Philippe Grivet
Hi Claus, I tried to post an example of a stacked 2D plot but my post was held up due to a too large graphic file (postscript). I have now converted this plot to png format. Here it is. Ypu may still be interested in using the xpoly function, despite seeing Samuel's beautiful examples with

Re: [Scilab-users] Stacked 2D plot in 3D

2018-01-31 Thread Jean-Philippe Grivet
Hi Claus, Rafeal and Samuel, Here is another method for stacked plots, which was suggested to me years ago by Serge Steer. I used it succssfully for about 12 individual curves. Cheers, JP Grivet Le 28/01/2018 20:19, Claus Futtrup a écrit : Hi Rafael and Samuel Thank you both for great

Re: [Scilab-users] pixel level programming

2018-04-18 Thread Jean-Philippe Grivet
    // set a single pixel to zero (= black) ShowImage(img, "white image with one single black pixel"); Hth, Philipp 2018-04-16 12:53 GMT+02:00 Jean-Philippe Grivet <jean-philippe.gri...@wanadoo.fr <mailto:jean-philippe.gri...@wanadoo.fr>>: Hello, I wo

[Scilab-users] pixel level programming

2018-04-16 Thread Jean-Philippe Grivet
Hello, I would like to know whether and how it is possible to program individual pixels within a Scilab figure ? I have in mind a simple application: a disk moves inside a bounded region and changes the colour of every pixel it sweeps over.  Thanks for your hints. JP Grivet --- L'absence

[Scilab-users] How to count pixels

2019-06-03 Thread Jean-Philippe Grivet
Hello everybody, Using Scilab (6.02/Win7), I have drawn a picure made up of thick lines and arcs, within a region with irregular borders. The backround is white, all lines are black. Now I would like to count the number of black and white pixels. Any idea on how I could do that ? Thank you

Re: [Scilab-users] {EXT} How to count pixels

2019-06-03 Thread Jean-Philippe Grivet
My thanks to all respondants. The figure is in internal Scilab firmat made up of polylines., the border is a polygon. Le 03/06/2019 à 12:47, Dang Ngoc Chan, Christophe a écrit : Hello, De : Jean-Philippe Grivet Envoyé : lundi 3 juin 2019 12:08 Using Scilab (6.02/Win7), I have drawn

Re: [Scilab-users] {EXT} How to count pixels

2019-06-05 Thread Jean-Philippe Grivet
Hello, I am mainly interested in obtaining the ratio (number of white pixels)/(number of black pixels), so that units are not of primary interest. Le 03/06/2019 à 15:21, Stéphane Mottelet a écrit : Le 03/06/2019 à 14:56, Jean-Philippe Grivet a écrit : My thanks to all respondants

Re: [Scilab-users] {EXT} How to count pixels

2019-06-07 Thread Jean-Philippe Grivet
Hello Philipp, Thank you for your program, it looks like it would do exactly what I wanted. However (as I should have stressed before) I work under win7. In this environment, the only image processing toolbox is IPCV in which several functions are lacking, namely     scicv_Init();

[Scilab-users] strange behaviof of function isreal

2019-11-13 Thread Jean-Philippe Grivet
Hello, I have stumbled upon the following strange behavior of function "isreal" (Scilab 6.02, win7): --> z = [1,2,3*%i]  z  =    1.   2.   3.i --> isreal(z(1))  ans  =   F What did I miss ? Rhank you for your help. J.-P. Grivet ___ users mailing

Re: [Scilab-users] ?==?utf-8?q? density in a graph

2020-01-24 Thread Jean-Philippe Grivet
(let's say blue), export in svg, edit the svg to replace the dummy color by the transparent one. Antoine Le Jeudi, Janvier 23, 2020 16:35 CET, Jean-Philippe Grivet mailto:jean-philippe.gri...@wanadoo.fr>> a écrit: > Dear all, > > I am drawing a graph in a

Re: [Scilab-users] ?==?utf-8?q? density in a graph

2020-01-24 Thread Jean-Philippe Grivet
-Philippe Grivet a écrit: Dear all, I am drawing a graph in a gray scale (say from 1 to 32), using lines of different density. I would like that, in the region of intersection of two lines, the shade of gray be the sum of the densities of each line. How can I manage that ? Thanks in advance for any

Re: [Scilab-users] {EXT} density in a graph

2020-01-23 Thread Jean-Philippe Grivet
Le 23/01/2020 à 17:24, Dang Ngoc Chan, Christophe a écrit : Hello, De : Jean-Philippe Grivet Envoyé : jeudi 23 janvier 2020 16:36 I am drawing a graph in a gray scale (say from 1 to 32), using lines of different density. I would like that, in the region of intersection of two lines

[Scilab-users] density in a graph

2020-01-23 Thread Jean-Philippe Grivet
Dear all, I am drawing a graph in a gray scale (say from 1 to 32), using lines of different density. I would like that, in the region of intersection of two lines, the shade of gray be the sum of the densities of each line. How can I manage that ? Thanks in advance for any hint JP Grivet

Re: [Scilab-users] density in a graph

2020-01-27 Thread Jean-Philippe Grivet
P M, Claus, Antoine, Christophe; Federico: Thank you  all fior your multifaceted and interesting suggestions. A special mention to Christophe: the pages on the SVG format are extremely clear; in my opinion, they deserve a wide audience and should be translated in English. I now understand