Call for Diadem 9.01 simple axis rescaling procedure

Hello,
Being at start of axis system definition it is not too obvious for me how to simply (!) obtain another axes scales than those being predefined ( linear, logarithmic ... in the axis system menu "Curve and axis definition\Axis definition\2D-axis system\2D scaling\Axis scales ) - e.g. for the case when dB scale is required. I was not too successful how to tackle this rather trivial task having spent an inapropriate time in search of Diadem manuals and Help documentation.
Thanks in advance.
Regards.
PeS

Hi Pes,
You were on the right track for scaling the axis. In the dialog you mention, make sure to select the Y axis in the top radio button, then select either "Logarthmic", "Octave", or "Third" as the scaling option from the combo box you referred to (see JPG attached below).
What you may be objecting to is that this does not change the values of the channel shown on the Y axis, but rather only changes the way those values are displayed (axis scaling). If you also need to change the scaling of the Y values, you should use the Formula Calculator to rescale the Y axis channel or create a new channel to display on the Y axis with this (dB) scaling.
The Formula Calculator equation for calculating dB is as follows:
Ch('new dB channel'):= 20*Log(Ch('old freq channel'))
Regards,
Brad Turpin
DIAdem Product Support Engineer
National Instruments

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In DIAdem: VIEW,
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Go to Solution.

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Attachments:
chart - full.JPG ‏152 KB
chart - detail.JPG ‏145 KB

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* at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)*
* at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)*
* at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)*
* at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)*
* at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)*
* at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)*
* at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)*
* at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)*
* at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)*
* at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)*
* at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)*
* at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)*
* at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)*
* at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)*
* at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)*
* at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)*
* at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)*
* at java.lang.Thread.run(Thread.java:534)*
here is my code :
Iterator iter = ImageIO.getImageWritersByFormatName(imageFormat);
* if( iter.hasNext() ) {*
* ImageWriter writer = (ImageWriter)iter.next();*
* ImageWriteParam iwp = writer.getDefaultWriteParam();*
* if ( imageFormat.equalsIgnoreCase("jpg") || imageFormat.equalsIgnoreCase("jpeg") ) {*
* iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);*
* iwp.setCompressionQuality(imageQuality);*
* //writer.setOutput(ImageIO.createImageOutputStream(response.getWriter()));*
* IIOImage imageIO = new IIOImage(bufferedImage, null, null);*
* writer.write(null, imageIO, iwp);*
* response.flushBuffer();*
please help me,would u give me a solutions for my problem..i really appreciate if you want to give a solution.
Regards,
Dany Fauzi

Actually the stack trace indicates the the error is happening in KaptchaExample.jsp, not in a Servlet. I'm guessing that the code you've presented is in a scriptlet (i.e. inside the JSP in <% %> brackets). This is altogether the wrong place for it. JSPs are purely for generating HTML and to try and generate image responses in one is doomed to failure. Write a servlet class to generate your image file. If you want to embed a dynamically generated image in an HTML page, then you need to generate HTML which accesses the Servlet through the <img src=... tag, i.e. the browser retrieves the image data as a separate transaction.
The immediate source of the crash is that the JSP already opened the output stream in order to write HTML output, so it's too late to try and open it for the writing of image data.

Call for Diadem 9.01 simple axis rescaling procedure

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