Dynamic impedance nomograph, a gift for you all

there is more stuff I cannot do. Windows 7 will not let me into my own %&# #$@ sendto menu ! I use it in XP and Vista to be able to send files to a di fferent program without changing the file association. Like I can send a pi cture to an editor instead of the windows junk viewer without permanently l ocking it in. that way I don't have to open the program and browse to the d amn file. Windows can suck mine for all the stuff they took away. I canot s tand Vista and right now I am STILL on the edge of downgrading this box to XP. Or owuld that be upgrading ?

ry that was *.*. It was saved in 98 as a "FND" file and hitting that confi ned the search to that directory, which comes in handy when you have llike three or five harddrives.

earching for a file. It is not a straightforward thing anymore.

IN ASHTRAY.

Do yourself a favour and go linux. I've never looked back since I did.

NT

OTOH, I did. I decided that I had better things to do than be a system programmer.

Back in the OP you said you were entertaining suggestions ?

Well, not necessary but might be cool would be if you could drag the scal. Like holding donw a mouse key. right of left, would drag the scale with it.

Has anyone tested this on a MAC ? My Mother hasd a MAC, when I get a chance I'll give it a whirl and see hoe it works. Not right this minute but...

I must admit to a certain amount of laziness regarding that. I have a live stick of Ubuntu 10 or so that would be easy to just run right now.

Looks good. Thanks.

I suspect that you can use CACHE-CONTROL or PRAGMA NO-CACHE to avoid the problem. (I are not an HTML programmist).

I just found my 1970's ring binder full of K&E graph paper. Ah, nostalgia.

Some more suggestions (No good deed is left unpunished):

1. The frequency tags are difficult to read. The problem is a combination of gray text, small font size, and a font where "0" and "G" look very similar. The result is that I can't tell the difference between (for example) 100Hz and 10GHz. I suggest that you put a space between the numbers and the units, use a slightly larger font, change the color from gray to black, and perhaps select a more readable font. Note the space between the numbers and units.

Now that I look at the page more carefully, all the text is slightly blurred. It kinda looks like you've scaled the graphics by dividing by a some number resulting in fractional pixels. No clue how to fix that.

1. Add a setting and check box to align and lock the reactances on the graph to a fixed 45 degree angle, so that it looks more like the original K&E graph paper version. (I'm a traditionalist).
2. Could you reverse the positions of the "+" and "-" signs? My brain is wired for increase to the right, and decrease to the left. I would prefer up and down, but that might require too many layout changes.
3. Printing the graph is a mess. The settings area overlaps and obscures the right side of the graph. Since this is mostly going to be a worksheet, I don't think it's necessary to print the settings area. Maybe just add the values of the "locked" lines. The labels along the bottom of the graph are also missing in landscape and the print preview shows a 2nd page with nothing on it. (Firefox 29.0.1 with "shrink to fit" enabled for printing).
4. Save as JPG or PNG would be nice so that I could annotate the graph with (for example) Irfanview. Also, add a copy to clipboard.
5. You really should give yourself credit for the program somewhere on the page. That way, you can be inundated by suggestions and comments like this. Well, maybe that's not a good idea.
6. Add a check box for Neanderthals and reactionaries (like me) that prefer cps instead of Hz, uuF instead of pF, have never learned to use nanofarads, and prefer the resistance in ohms with lots of zeros and no SI units, just like the original K&E version:

Try one of these programs for searching:

Search by filename with regex.

Search by contents or filename.

Do you really expect Microsoft to supply you with *ALL* your tools?

Don't forget the cancer stick igniter, the running board, and the buggy whip socket.

Smokeless powder? Do you perhaps explode?

I recently bought a cheap Chromebook muddle C720-something. It does web browsing, email, Google Docs, MS Word/Excel for ChromeOS, and little else. No Usenet reader, no Skype, few utilities, etc. If it doesn't run in a (Chrome) browser, forget about running it. Android tablet and phone apps do NOT work. It's very fast at most everything, However, it takes care of about 80% of what I need in a laptop (looking cool at the coffee shop, etc). I've been reselling them as a "Grandma" laptop, for those that do not want to learn the intricacies of a Windoze machine, and as a "vacation" laptop, for those that don't want to drag $1,000 worth of laptop with them on a trip. Also, it can run Linux from an external SD or USB 3.0 flash drive.

Thanks Clifford. I found that I get different values depending on which is locked. For example if I lock freq to 982kHz I get 100ohm at 1.63nF and 16.3uH (correctly) but if I lock Z to 100ohm I get 982kHz with 289pF and

I am using Chrome on Windows and otherwise it is great.

Am I not using it right or please can you check?

piglet

All possible, but probably not going to happen.

I develop on a Mac. Got tired of Linux upgrades breaking things, though it's better now.

That would work if I'd added it on the previous version.

I've added a partial space and enlarged the font slightly. Also use a mu symbol for micro and made the text darker. The font rendering is default SVG, and custom fonts too much work; I agree it's too condensed, but the Raphael library doesn't expose the SVG spacing attributes. The blurring is your browser anti-aliasing.

I wanted to add C/L locking, but not to 45 degrees; that would depend on how many decades are being covered. As it is it tracks the browser resizes.

I changed them entirely to something more intuitive.

Chrome doesn't print SVG. I added a print stylesheet to fix the layout in Firefox, and remove the controls.

Use a screen-shot tool, the browsers don't provide image save.

I added a copyright message and a donate button :). No email address, but I'm easy to find.

Too much effort for the reward. It's nice and orthogonal with one multiplier each three decades, and three-significant digit rounding.

Clifford Heath.

The coordinates were depending on the browser margins, which on Windows includes too much extra height. I now calculate and adjust for the margins. Let me know if it's still inaccurate.

Clifford Heath.

Thanks. When frequency is locked and I type in a new F the vertical crosshair goes to correct place but I think my problem is that when Z is locked entering a new impedance does not shift horizontal crosshair correctly. It looks more like it locks to the last Z cursor coordinate and not to the value entered.

piglet

Thanks for your persistence. It was completely ignoring the text entry of an impedance value. Fixed now.

Works fine under OS X 10.9.3.

Yaay! Thanks, it works great now! piglet

Yes, but there's a big advantage to running Windoze, for me. Windoze users rgularly pay for high priced consultants, such as myself, to keep their systems alive and well. They know that Microsoft sells defective software and that it takes an expert to keep it going. Mac users assume that Apple can do no wrong, and that if anything fails to perform in an expected manner, it cannot possibly be an Apple problem. They will seek help from a computer faith healer long before they admit that they are having a problem lest someone suggest that since Apple is perfect, it must be a user problem. Linux users expect and usually get everything for free. The also tend to avoid high priced consultants. So, if I want to make money, I hang around with Windoze users.

Linux is all that, in spades. It's great, if your hobby is software. I despise it. Windows just works (never thought I'd be saying that).

Sounds like Linux users, to me. Talking about Koolaid!