Mathcad

Hello everyone, I’ve been using PTC Mathcad Prime for some time at my workplace and I wrote down some suggestions to make this software even better.Some of it are minor bugs, some are usability issues. I’ve added some would-haves also.Sorry if they overlap with what's been currently discussed (they surely do), but I hope you'll find something worth investigating.BugsWhen you set "Transparent" as default plot background colour and save the file as a template, it switches to "Paper color" when you start a new document.floor() and mantissa() functions should work with units. Image.matrix() function does not work properly. It ignores ORIGIN. Image.Some functions, like match(), return a 1×1 matrix instead of a scalar. Image.Objects in Draft View are not exactly nonprintable.Copy-paste in collapsible area moves everything below the area instead of enlarging the area.UnitsOf() should return actually displayed units. Image. Then would be no need to manually adjust everything further in the wor

Dear friends,I have problem trying to return a range from vlookup.  I have a table input which defines the steel gage number against the metric thickness.  The metric thickness is in column 0 and the gages in subsequent columns.  This variable is named "gages"My calculation sheet is looking at the resistance of steel walls on a silo, and can have up to 35 different thickness in the one silo.  So I have a 1 x 35 input table in which the steel thickness is entered "Sidewall".  This is a unitless variable, which relates to the metric thickness of the steel.All I want to do, using the vlookup function is to return the actual steel gage numbers for each of the Sidewall thicknesses.  Here is what I have entered:wga[rn:vlookup(Sidewall[rn,gages,1)   rn is the range variable 1..35What I was hoping was to get an output wga[rn, which gives me a 1 x 35 matrix of the steel gage numbers.  Instead, what I get is 35 row matrix of nested 1 x 1 matrices.&nbs

I'd like to get  purely real solution out of the symbolic solver (ie not a product of i) - is it possible to require this? For example solving  x^2 +y^2 = 1 for x should return sqrt(1-y^2).Am I just failing to use assume keyword correctly?ThanksJoe

Dear PTC CommunityFrom a set of x and corresponding y values I'm trying to solve a system of equations and for this I'm of course using a set of boundary conditions. One of these is that all solution values are equal to or above zero (i.e. non-negative) but despite using the minerr-function to solve the system I still get negative values. They are, however, quite small and the results are thus usable but it seems strange to me that the negative values can't be avoided. Is there a way to strictly enforce a boundary condition?

How do i know which coefficients go with which independent variables in a second order polynomial with 3 independent variables? I have extracted 10 coefficients but now want the equations to use elsewhere.

Dear friends,here I have a Maple 13 Code which I would like to transfer it in a MathCAD program. Who can do this for me - I do not know Maple very good.I would pay a little if there are serious offers.Thanks

In my mathCAD sheet, I've solved this four bar linkeage for any user input of crank position, but what I'd like to do now is develop equations to describe the motion of the links (and particularly a point in question) through out the entire 360 degree range of my crank arm.  This sheet uses scalar position equations and Given / Find solve blocks to solve for link arm angle, angular velocity, and angular acceleration based on the user input of crank angle, which in my sheet is θ2. I would like to make θ2 a range variable, or a matrix of values from 0 - 360 degrees so I can output and then plot the motion of the point I'm looking for, but I'm stuck.  The Given / Find block fails, and then obviously the rest of the sheet fails.  If I'm approaching this incorrectly from a programming stand point, please let me know.

Dear all,I got thanks a discussion chain some Mathcad macro's to read data in any worksheet in an excel file but thw woksheet name has to be known.My data acquisition system generates automatically excel data table with every time new worksheet names. Is it possible to obtain all the worksheet names of an excel file directly from Mathcad ?Second question:It is possible to read directly from Mathcad data within worksheet of Excel file and it works well.Is it possible to do the reverse, ie to write data direclty from Mathcad in specific worksheets of an excel file ?I have Mathcad 14 (will have mathcad 15 next year)Thank youP.Bujard

Hi...I have two questions as below,1. How to assign mathcad prime 2.0 output value to creo parametric as a model parameter ?2. How to integrate mathcad prime2.0 worksheet with creo parametric2.0 with output value type as a string?I have integrated my mathcad worksheet with creo parametric but unable to make its model parameter so i want to know how we can add it by relation or else.and secondly if i give my mathcad output value in string format then i am not able to make its integration.Thanks,Prashant Pandarkar

Can anyone solve this trick ? Worksheet for Mathcad Prime 3.1 is attached.

Every approximately 10 times I start a Mathcad 15 session under Windows 7 it ends with "mathcad not responding".  I cannot close Mathcad, Task Manager cannot close Mathcad, but mostly I can  stop Mathcad in the process window by ending the process.  Does this happen to anyone else or am I a lone sufferer with  some computer/operating system glitch?  This often happens  when I  have been editing e.g. plots.Dave Snelling

Is it possible in Mathcad to write a function that provides the nearest multiple of a value without going over a particular ceiling? For example, I have a maximum allowable bolt Ø of 0.33in. Bolts come in 0.125in (1/8in) Ø increments. I'd like Mathcad to provide me with a 0.25in Ø bolt size (as 0.375in exceeds 0.33in). I tried Ceil(0.33in,0.125in) but the result is 0.375in.

I just converted over to Prime 3.0. Before I used to use Mathcad v8.  The option that i used the mose was to craete an equation & then have Mathcad symbolically solve for the variable. In mathcad 8 I would do the following steps:1.) define an equation with some variables, using the ctrl+= (so I get the bold =)2.) click on the variable I wanted to solve for3.) In the top menu bar click "symbolic", then "variable", then solveThat was it ... I can not find that in the new Prime 3

Hi..I need to add one extra row in matrix or in excel component, for more detail pls see below e.g.In excel component it shows only values, but i want to show its heading also to understand it better as per shown in second snap (i.e. test1, test2, test3, test4).so please can anybody help me.Regards,Prashant Pandarkar

I am trying to create a mathcad in which the user selects one of the two options (lets say Load Case 1 & Load Case 2) in the beginning of the sheet. Subsequent to this selection, a few calculations take place in the sheet. Now when the user is lets say 10 pages down, I want him to be able to switch between these options so that all the calculations in the mathcad now reflect the results based on this revised choice. I was hoping to see something like a "freeze panes" option in excel or to see some floating region which would be visible at all times to the user.

Hi, All,I have a question about  solve equation,please check red circle as below,I've defined Vop1_out at solve equation,why I need to define it  again?Is there have method to solve this problem??Thank you all guys

Hopefully this is in the right spot. First off I am fairly new to MathCad.I am having a problem with getting the calculated values from a complex polynomial equation to fit my data. I am working with an aggregating protein system. I know the total concentration of protein subunits and the ratio of monomer to total at a variety of concentrations. This ratio has to be between 0 and 1. I am trying to fit an equilibrium equation to this data. I have solved the polynomial equation to equal 0 and have put in guesses for the variables and input a matrix of experimental total concentrations.I would like it to give me all of the values of alpha between 0 and 1 at each total concentration because that is the physiologically relevant root. I also need to check the variance from the experimental values. I do not understand how to get the program to calculate these things.I have attached the MathCad document here.Thank you for any help,Seth

Hi,I am fairly new to Mathcad and I am trying to do the following from the data sheet. I need to make both of these plots and haven't got a clue where to start. If anyone can help it would be REALLY appreciated.

I have some empirical formulas to enter in Mathcad 15, in which the values should be inputted without units.Is there any way to input them other that dividing the variable to his unit?Example:a=1mb=2kgI don't want to input:c=a/1m + b/1kg = 3I want something like:c = "trim unit" (a+b) = 3Note:I want to keep the units for a and b definitions.I don't want to define other variables.Thanks

In investigating an unrelated problem, I found a very useful xmcd file on this discussion board. But there is a symbol I don't recognize. Can someone tell me what the circled operators in the image below do?Also a nice feature would be to hover over an operator and for a popup to appear saying what the operator is and link to the help file for that operator.

Hi..Please can I know, How to get current time & date in mathcad ?or any way to get any unique number.I want to write file with its unique name for every saved mathcad sheet.Regards,Prashant Pandarkar

Hi,I'm pretty sure this question has been asked before but I just can't find the answer. I was working on quite a large Mathcad 15 file, and when I closed Mathcad and wanted to shut down my PC (Windows 7), Mathcad suddenly asked me if I wanted to save my file, even though Mathcad wasn't even running anymore and I already saved it. I clicked yes, and when I reopened the file, at least half of the content was gone completely and the rest doesn't seem to work (it just doesn't calculate for some reason). It also lost about half of its file size. I saved a version of that file two weeks ( ! ) ago, so I desperately want to recover some older version of this file. I can't recover it via the recovering feature of Windows 7 since I didn't activate that. I'm uploading the file so you can see for yourself (comments and stuff are in German though).I'm very thankful for all suggestions.

This is a more general question but I couldn't find the MathCAD general issues discussion group. Regardless, the PTC website makes me feel very stupid. I’m at the eLearning portal and see this:I click on the Essentials link and it takes me to http://support.ptc.com/ptcu_content/web/descriptions/EN/SAB-CEK5280-WBT.pdf which is nothing but a PDF file telling me the contents of the Essentials module. How do I actually access the training content?

In Mathcad 11.0a: In Mathcad 15 M040:In Mathcad Prime 3.1 F000:

Dear all,I am completely new to DOE in MathCAD, my only experiences with DOE are related to a DOE-Module contained in a simulation software (ADAMS)... and that was a lot of years ago.I am aware that there is a complete set of DOE-tools in Mathcad, I also tried to have a look at the quick-sheets, but I am not understanding how can I use this tools. I would need some kind of E-Book or the like, a "getting-started"-sort of thing.Anyway I attach an example (without units or real references, but slightly simplified from a real experiment whose results I am requested to evaluate).What I would like to do is very simple. I do not need to "design" the experiment, that was already done "by hand", so the different combinations of parameters are already given.There are a few "digital" parameters (P1, P2,... up to HV4) that can take the value 0 or 1.  In my experiment they are pumps, heat-exchangers that can be on or off.  Then there are a few real parameters (F1, F2, ... PT2).  They