Error Bars Excel Log Graph
Contents |
literature SHOWCASE Applications User Case Studies Graph Gallery Animation Gallery 3D Function Gallery FEATURES 2D&3D Graphing Peak Analysis Curve how to graph error bars in excel 2013 Fitting Statistics Signal Processing Key features by version Download full feature how to make a graph with error bars in excel list LICENSING OPTIONS Node-locked(fixed seat) Concurrent Network (Floating) Dongle Academic users Student version Commercial users Government users
How To Do Custom Error Bars In Excel
Why choose OriginLab Who's using Origin What users are saying Published product reviews Online Store Get a quote/Ordering Find a distributor Purchase New Orders Renew Maintenance Upgrade
How To Put Error Bars In Excel Mac
Origin Contact Sales(US & Canada only) Find a Distributor Licensing Options Node-locked(fixed seat) Concurrent Network (Floating) Dongle Academic users Student version Commercial users Government users Why choose OriginLab Purchasing FAQ Support SERVICES Transfer Origin to new PC License/Register Origin Consulting Training SUPPORT Support FAQ Help Center Contact Support Support Policy DOWNLOADS Service Releases Origin how to add horizontal error bars in excel Viewer Orglab Module Product Literature Origin Evaluation All downloads VIDEOS Installation and Licensing Introduction to Origin All video tutorials DOCUMENTATION User Guide Tutorials OriginC Programming LabTalk Programming All documentation Communities User Forum User File Exchange Facebook LinkedIn YouTube About Us OriginLab Corp. News & Events Careers Distributors Contact Us All Books Origin Help Graphing Adding Data Labels and Error Bars User Guide Tutorials Quick Help Origin Help X-Function Origin C LabTalk Programming Python Automation Server LabVIEW VI Code Builder License MOCA Orglab BugFixes ReleaseNotes Video Tutorials Origin Basics The Origin Project File Workbooks Worksheets and Worksheet Columns Matrix Books, Matrix Sheets, and Matrix Objects Importing and Exporting Data Working with Microsoft Excel Graphing Customizing Your Graph Graphical Exploration of Data Gadgets Common Analysis Features X-Functions Matrix Conversion and Gridding Regression and Curve Fitting Mathematics Statistics Signal Processing Peak Analysis Image Processing and Analysis Exporting and Publishing Graphs Sharing Your Origin Files with Others Communicating with Other Applications Programming in Origin Customi
graphs can give a concise and compact form of representation, while graphs made poorly can be misleading and very confusing. Why use logarithmical graphs? If you find yourself with data spread on an extremely large area, the graph will be very compact and you may miss some sharp
How To Insert Error Bars In Excel Mac
drops in values because of this. A semi-logarithmical graph is has one of the two axes (usually vertical error bars in excel the abscissa) in a logarithmical form. The logarithmical base is usually 10, but can also be “e” or any other base. Well let's suppose you how to plot error bars in excel mac have the following table: X 1 2 5 10 20 50 100 200 500 1000 2000 Y 1 2 4 16 256 65536 4.29E+09 1.84E+19 3.4E+38 1.16E+77 1.3E+154 The corresponding Excel scatter chart is this: On the other hand, if you extract http://www.originlab.com/doc/Origin-Help/Add-ErrBar-to-Graph the logarithm of both X and Y rows you get this table: log_x 0 0.3 0.7 1 1.3 1.7 2 2.3 2.7 3 3.3 log_y 0 0.3 0.6 1.2 2.41 4.82 9.63 19.27 38.53 77.06 154.13 And its corresponding graph: Does it make sense now? I thought so How to obtain the logarithmic graph Double click the axis that you want to be on a logarithmical scale. In the "Scale" tab, select the "Logarithmical Scale" option and click ok. Then, go to the Chart Options http://bubble.ro/Logarithmic_scale_graphs_in_Excel.html (in the Chart menu) and in the "Gridlines" tab check the "Minor gridlines" on the axes you want depending of the desired graph type: semi-logarithmical or logarithmical. That's it ! Hope this helps ! » Permalink Posted by: Nitro on March 18, 2006 at 14:51. » Comments Har har Very interesting. I never thought logarithmic scales would lighten up my life ;)... Posted by SunBeam on March 20, 2006 at 05:19 PM. Tip Just remember to use the normal values when you select source for the graphic, Excel does the log operation for you. Posted by Mika on March 21, 2006 at 01:18 AM. Hello, sort anoob here hello ladies and gents! I've been kind of lurking around. I love this site! thanks for having me :) Posted by Nanbe1st on October 16, 2006 at 06:49 AM. thanks you just made my day thanks so much for your help i was able to find this site on the 1st page of google assignment done! :D Posted by mr.mackey on January 24, 2007 at 02:17 AM. Y crossing point How can I have the Y axis cross the X axis at its MINIMAL value (X axis being logarithmic)? Thanks in advance Posted by anne on March 5, 2007 at 11:06 AM. Limitations of logarithmic graphs in Excel Unfortunately Excel is only able to use powers of ten as minimum and maximum values of the logarithmic axes. But logarithmic scaling is not only useful for a wide data range. It is
visit from the selection below. Home » ExcelBanter forum » Excel Newsgroups » Charts and Charting in Excel Logarithmic error bar bug Author Name Remember Me? Password Site Map Home Register Authors http://www.excelbanter.com/showthread.php?t=189826 List Today's Posts Search Web Partners Search Forums Show Threads Show Posts Advanced Search http://mymathforum.com/algebra/2903-error-bars-log-transformed-plots.html Go to Page... Logarithmic error bar bug « Previous Thread | Next Thread » Thread Tools Display Modes #1 June 3rd 08, 03:18 PM posted to microsoft.public.excel.charting Jdoggrr external usenet poster Posts: 1 Logarithmic error bar bug When placing error bars on a column graph with a logarithmic Y axis, the error bar is drawn as a error bars large dark triangle connecting the last bar and it's neighbor. There is an error, something about negative and zero values in logarithmic scales, but there are no such values in the data. Is there a work-around for this? Jdoggrr View Public Profile View message headers Find all posts by Jdoggrr Find all threads started by Jdoggrr Ads #2 June 4th 08, 08:56 PM posted to microsoft.public.excel.charting ShaneDevenshire external usenet poster Posts: 2,344 Logarithmic error error bars in bar bug Hi, Send me a copy of the chart and I will look at it when I get home tonight. -- Thanks, Shane Devenshire Microsoft Excel MVP "Jdoggrr" wrote: > When placing error bars on a column graph with a logarithmic Y axis, the > error bar is drawn as a large dark triangle connecting the last bar and it's > neighbor. There is an error, something about negative and zero values in > logarithmic scales, but there are no such values in the data. Is there a > work-around for this? ShaneDevenshire View Public Profile View message headers Find all posts by ShaneDevenshire Find all threads started by ShaneDevenshire #3 July 9th 08, 06:40 AM posted to microsoft.public.excel.charting [emailprotected] external usenet poster Posts: 1 Logarithmic error bar bug Check your Min and Max values to make sure the DIFFERENCE between the plotted value and +/- error value is not zero (which can't be plotted on a log axis). In other words, the max or min error value cannot be the same as the plotted value for any data point. All the Best! [emailprotected] View Public Profile View message headers Find all posts by [emailprotected] Find all threads started by [emailprotected] #4 July 9th 08, 11:26 AM posted to microsoft.public.excel.charting callicles external usenet poster Posts: 1 Logarithmic error bar
April 21st, 2008, 04:45 AM #1 gstuart Newbie Joined: Apr 2008 Posts: 3 Thanks: 0 Error bars on log-transformed plots? Hello - I am a genetics researcher. I have a series of data points with errors (standard errors), that I wish to plot as a column plot with error bars: GENE, AVG FOLD CHANGE, SE Gene1, 2193.10, 1200.74 Gene2, 96.28, 9.08 Gene3, 39.02, 22.51 Gene4, 5.88, 0.82 Gene5, -0.68, 0.33 Gene6, 1.14, 0.02 Gene7, -1.46, 0.16 Gene8, -1.56, 0.50 Gene9, -1.58, 0.10 Gene10, -1.88, 0.45 Gene11, -2.04, 0.45 Gene12, -6828.82, 975.41 Positive values are up-regulated genes; negative values are down-regulated genes (re: gene expression levels). I wish to plot this as a column plot on a log scale (y-axis) with negative values below the zero baseline, positive values above, and with the errors indicated. Something like: 1000 100 10 * 1 * 0------------------- -1 * -10 * -100 -1000 but with bars instead of the asterisks - you get the idea. I can do this easily enough using MS Excel, by taking the log of the absolute value, multiplying the result by +1 or -1 (to restore the original "directionality" - i.e. up- or down-regulated). A couple of questions: (Q1) Is it "better" to use log (base 10) or ln (natural) log transformations? (Q2) How would I present the error bars - would I log (or ln) -transform the standard errors, for example, and plot these [or the absolute values of these, since the log of numbers <1 are negative; e.g. log(0.5) = -0.301)]? I tried finding the answer to these questions in Google, but I wasn't very successful. ... I would very much appreciate any comments regarding the log-transformation of data and plots of log-transformed data, particularly regarding error bars! Thank you! Sincerely, Greg :-) April 22nd, 2008, 01:06 PM #2 gstuart Newbie Joined: Apr 2008 Posts: 3 Thanks: 0 Hello - I think I have this right ... Referring to the sample data (below; this would be easier, if I could attach my Excel spreadsheet), I first log-transformed my data, x = log( |x| +