In recognition of Pi Day (3/14 using MM/DD format), I suggest everyone eat a slice of pie today, and while you are eating it download at least one of the following FEX submissions to play with:
Did I miss any other good ones?
MATLAB: Pi Day
discussionpipie
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You could always download my HPF toolbox from the file exchange. It will provide 500100 digits of pi.
P = hpf('pi',500000);cp = disp(P);numel(cp)ans = 500001 cp(1:1001)ans = '3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609433057270365759591953092186117381932611793105118548074462379962749567351885752724891227938183011949129833673362440656643086021394946395224737190702179860943702770539217176293176752384674818467669405132000568127145263560827785771342757789609173637178721468440901224953430146549585371050792279689258923542019956112129021960864034418159813629774771309960518707211349999998372978049951059731732816096318595024459455346908302642522308253344685035261931188171010003137838752886587533208381420617177669147303598253490428755468731159562863882353787593751957781857780532171226806613001927876611195909216420198'So 1000 digits of pi, plus a decimal point.
As I recall, I even computed those digits using HPF itself just to test the tool, and verify it was working correctly. I'm not sure which series I used, but there are many good ones out there if you look carefully. You do need to be working with a tool that can handle high precision arithmetic. A double will not suffice.
Be careful with the last digit reported to make sure it was not rounded. For example, if you do this:
vpa(sym('pi'),1000)the last 10 digits reported are ...9216420199
However, the true digits of pi in that vicinity run as: ...9216420198938095...
So the last digit reported by vpa is actually rounded up to a 9.
A proxy page can also be used to bypass an authenticated service with 10.x versions of the APIs.
A few things to note:
- Bypassing the Windows authentication with a proxy page will cause all of your connections to be made by the identity of the application pool that runs the proxy page, or by the identity of the connection you make within the proxy page. This may cause problems for tracking "who does what" since actions made through the proxy will all appear to be the same user.
- Bypassing authentication may not be permitted by the publishing authority. Make sure you're allowed to publish the service in such a way before proceeding.
- In the ESRI Javascript API, the proxy is set as a global setting, and all connections that would use a proxy will be directed through the same proxy page. So, if you're combining services in your map, make sure your proxy handler is ready to deal with whatever gets thrown at it approriately.
Windows Authentication is normally used on an internal network only, where you may take advantage of the integrated login, and bypass the login prompt that way. If your users are on the internal network, and have already logged on to the domain on their workstation, they shouldn't be challenged by a login prompt (IIS should already have handled that!)
Users that are not logged on to the network already, such as external users being directed to the Windows-secured server, will always be presented with a login prompt. There is no way to apply the login in the background once this prompt appears - its presence indicates that the background login attempt has already failed.
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