## Search found 3361 matches

Thu Sep 20, 2018 10:54 am
Forum: Bug Reports
Replies: 0
Views: 31

Here are two Excel files that differ only in that I moved the date column at the right in the first to be on the left in the second. EViews reads the dates in the second but not the first.
Wed Sep 19, 2018 7:49 pm
Forum: Estimation
Topic: Defining derivatives and constrains?
Replies: 5
Views: 97

### Re: Defining derivatives and constrains?

I'm not sure there are any general tricks, although perhaps someone has a list of useful ones.
Wed Sep 19, 2018 7:17 pm
Forum: Estimation
Topic: Defining derivatives and constrains?
Replies: 5
Views: 97

### Re: Defining derivatives and constrains?

Hello There, I'm trying to fit the following equation (known as lotka-Volterra) to real data series (x, y, z) to estimate its parameters (a, b, c, d): dx/dt = (a)x - (b)x^2 + (c)x*y - (d)x*z Could you please help mw with followings? 1- how could I define dx/dt in the equation specification? 2- Is t...
Wed Sep 19, 2018 6:22 pm
Forum: Estimation
Topic: Defining derivatives and constrains?
Replies: 5
Views: 97

### Re: Defining derivatives and constrains?

Hello There, I'm trying to fit the following equation (known as lotka-Volterra) to real data series (x, y, z) to estimate its parameters (a, b, c, d): dx/dt = (a)x - (b)x^2 + (c)x*y - (d)x*z Could you please help mw with followings? 1- how could I define dx/dt in the equation specification? 2- Is t...
Tue Sep 18, 2018 8:40 am
Forum: Bug Reports
Topic: bad axis scaling (not exactly a bug, but...)
Replies: 0
Views: 64

### bad axis scaling (not exactly a bug, but...)

Here's a scatter diagram with the y-axis being a dummy variable. Having the "2" label when no point is above 1 is kinda ugly.
Capture.PNG (16.67 KiB) Viewed 33 times
Tue Sep 18, 2018 8:39 am
Forum: Econometric Discussions
Topic: Automatic ARIMA Forecasting
Replies: 2
Views: 126

### Re: Automatic ARIMA Forecasting

In one case you are predicting the first difference and in the other you are predicting the level.
Fri Sep 14, 2018 11:55 am
Forum: Bug Reports
Topic: small parse bug
Replies: 0
Views: 40

### small parse bug

Code: Select all

`ls r_ibm/@sqrt(sigmaSqr) c/@sqrt(sigmaSqr) r_ibm(-1)/@sqrt(sigmaSqr)`

Capture.PNG (2.89 KiB) Viewed 31 times
Thu Sep 13, 2018 12:36 pm
Forum: Bug Reports
Topic: window arrangement (more unnicety than bug)
Replies: 1
Views: 64

### window arrangement (more unnicety than bug)

The location of opening new windows could use a little work. Here's an example where a window was opened such that scrolling was required even though there was plenty of room for a better location.
Capture.PNG (88.04 KiB) Viewed 52 times
Thu Sep 13, 2018 8:10 am
Forum: Estimation
Topic: Fixed Effects- Industry and Year
Replies: 17
Views: 262

### Re: Fixed Effects- Industry and Year

I believe your problem is that there are many NA values in saving1 and that in the remaining sample there really is perfect multicollinearity.
Wed Sep 12, 2018 6:47 pm
Forum: Estimation
Topic: Fixed Effects- Industry and Year
Replies: 17
Views: 262

### Re: Fixed Effects- Industry and Year

Code: Select all

`equation mincerfi.ls lhh_income c head_age  head_age^2   head_educ @expand(sc01,ifls, @dropfirst)`

runs fine on my machine.
Wed Sep 12, 2018 2:44 pm
Forum: Estimation
Topic: Fixed Effects- Industry and Year
Replies: 17
Views: 262

### Re: Fixed Effects- Industry and Year

Try using

Code: Select all

`@expand(sc01, ifls, @dropfirst)`

To be honest I'm not sure what multiplying @expand terms does, although perhaps the EViews team could chime in.
Wed Sep 12, 2018 1:59 pm
Forum: Estimation
Topic: Fixed Effects- Industry and Year
Replies: 17
Views: 262

### Re: Fixed Effects- Industry and Year

You'll probably have to post your data and the exact command that fails to get more advice.
Wed Sep 12, 2018 1:51 pm
Forum: Estimation
Topic: Fixed Effects- Industry and Year
Replies: 17
Views: 262

### Re: Fixed Effects- Industry and Year

You have probably fallen into the dummy variable trap.
Mon Sep 03, 2018 1:55 pm
Forum: Bug Reports
Topic: fred search
Replies: 0
Views: 89

### fred search

Something is funky with Fred search (or I have once again forgotten some important detail)
Typing "labor" in the description field returns no series, not even CIVPART.
Capture.PNG (13.7 KiB) Viewed 85 times

Note that
Capture2.PNG (13.89 KiB) Viewed 85 times

produces the strange error message

Capture3.PNG (5.13 KiB) Viewed 85 times
Sat Sep 01, 2018 10:10 am
Forum: Estimation
Topic: Fixed Effects- Industry and Year
Replies: 17
Views: 262

### Re: Fixed Effects- Industry and Year

yes, something like

Code: Select all

`ls y c x @expand(industry,@droplast) @expand(@year,@droplast)`