Re: [Scilab-users] Efficiency map

2020-04-14 Thread Stéphane Mottelet
Hello, You are taking the problem by the wrong tip. If I understand your problem, you have scattered (x,y,z) data (x=speed, y=torque, z=efficiency) and you want to approximate this data by a smooth surface z=f(x,y) and want to draw level curves of this surface. So, instead of focusing on cur

Re: [Scilab-users] Efficiency map

2020-04-14 Thread Daniel Stringari
The curve I have so far is summarized in the attachment below. -- Sent from: http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html ___ users mailing list users@list

Re: [Scilab-users] Efficiency map

2020-04-14 Thread Daniel Stringari
The curve I would like to plot is similar to the one attached. There are several efficiency curves within a SPEEDxTORQUE chart. My problem comes down to a spreadsheet generated by external software where I have three columns: SPEED, TORQUE and EFFICIENCY. The data is all broken and so I have to put

Re: [Scilab-users] Efficiency map

2020-04-14 Thread Stéphane Mottelet
Moreover, knowing if you are looking for closed curves (or not) would help. S. Le 12/04/2020 à 17:00, Stéphane Mottelet a écrit : Hello Daniel, There can be different answers depending on what you are trying to obtain at the end. Do you need to smooth curves by themselves, or are you somew

Re: [Scilab-users] Efficiency map

2020-04-12 Thread Stéphane Mottelet
Hello Daniel, There can be different answers depending on what you are trying to obtain at the end. Do you need to smooth curves by themselves, or are you somewhat trying to build  a smooth surface based on iso-value curves (your TORQUE X SPEED curve ?) ? In this latter case, can you provi

[Scilab-users] Efficiency map

2020-04-06 Thread Daniel Stringari
Dear friends, I'm still a layman at SCILAB, but I'm using SCILAB this week to be able to plot an efficiency map through a routine I created on it. Basically the efficiency map is summarized in* annex 1_0 and annex 1_1*(I took it from the internet to exemplify the problem), where through a TORQUE X