<html><head></head><body lang="en-GB" style="background-color: rgb(255, 255, 255); line-height: initial;"> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Dear Dragan,</div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Please replace brick() with stack() and it should work, and of course you need to adapt your band names in spectralIndices().</div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Regards, Martin</div> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br style="display:initial"></div> <div style="font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"></div> <table width="100%" style="background-color:white;border-spacing:0px;"> <tbody><tr><td colspan="2" style="font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"> <div style="border-style: solid none none; border-top-color: rgb(181, 196, 223); border-top-width: 1pt; padding: 3pt 0in 0in; font-family: Tahoma, 'BB Alpha Sans', 'Slate Pro'; font-size: 10pt;"> <div><b>From: </b>Dragan Kaludjerovic</div><div><b>Sent: </b>Sunday, December 11, 2016 23:21</div><div><b>To: </b>rs-ecology@lists.uni-wuerzburg.de</div><div><b>Subject: </b>Re: [RS-ecology] RS-ecology Digest, Vol 16, Issue 1</div></div></td></tr></tbody></table><div style="border-style: solid none none; border-top-color: rgb(186, 188, 209); border-top-width: 1pt; font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"></div><br><div id="_originalContent" style=""><div dir="ltr"><div>Now I have changed it, but still getting error<br><br><span style="color:rgb(0,0,255)">install.packages("RStoolbox")<br>install.packages(raster)<br><br>library(ggplot2)<br>library(raster)<br>library(rgdal)<br><br>bs3 <- raster("C:/R_examples/VI/B3.TIF")<br>bs4 <- raster("C:/R_examples/VI/B4.TIF")<br><br>bs3<br>bs4<br><br>group <- brick(bs3, bs4)<br><br>data(group)<br><br>## Calculate NDVI <br><br>ndvi <- spectralIndices(group, red = "bs3", nir = "bs4", indices = "NDVI")<br><br>ndvi<br><br></span></div>error is:<span style="color:rgb(0,0,255)"><br><br></span><br><pre tabindex="0" class="gmail-GODMDAHBLOB" id="gmail-rstudio_console_output" style="font-family:"lucida console";font-size:10pt;outline:medium none;border-width:medium;border-style:none;border-color:-moz-use-text-color;word-break:break-all;margin:0px;white-space:pre-wrap;line-height:15px;color:rgb(0,0,0);font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;word-spacing:0px;background-color:rgb(255,255,255)"><span class="gmail-GODMDAHBBPB gmail-ace_keyword" style="color:blue;white-space:pre">> </span><span class="gmail-GODMDAHBBOB gmail-ace_keyword" style="color:blue">group <- brick(bs3, bs4)
</span><span class="gmail-GODMDAHBBPB gmail-ace_keyword" style="color:blue;white-space:pre">> </span><span class="gmail-GODMDAHBBOB gmail-ace_keyword" style="color:blue">data(group)
</span><span class="gmail-GODMDAHBFOB gmail-ace_constant" style="color:rgb(197,6,11)">Warning message:
</span><span class="gmail-GODMDAHBFOB gmail-ace_constant" style="color:rgb(197,6,11)">In data(group) :</span><span class="gmail-GODMDAHBFOB gmail-ace_constant" style="color:rgb(197,6,11)"> data set ‘group’ not found</span></pre></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Dec 11, 2016 at 12:00 PM, <span dir="ltr"><<a href="mailto:rs-ecology-request@lists.uni-wuerzburg.de" target="_blank">rs-ecology-request@lists.uni-wuerzburg.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send RS-ecology mailing list submissions to<br>
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Today's Topics:<br>
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1. problem with RStoolbox (Dragan Kaludjerovic)<br>
2. Re: problem with RStoolbox (Martin Wegmann)<br>
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<br>
Message: 1<br>
Date: Sat, 10 Dec 2016 19:00:11 +0100<br>
From: Dragan Kaludjerovic <<a href="mailto:advancedgwt@gmail.com">advancedgwt@gmail.com</a>><br>
To: <a href="mailto:RS-ecology@lists.uni-wuerzburg.de">RS-ecology@lists.uni-<wbr>wuerzburg.de</a><br>
Subject: [RS-ecology] problem with RStoolbox<br>
Message-ID:<br>
<<a href="mailto:CAFZvhLipaCHuq-hQsk_5i31ThbCXGQZ4cPhP87%2BYS4P6__rzDw@mail.gmail.com">CAFZvhLipaCHuq-hQsk_<wbr>5i31ThbCXGQZ4cPhP87+YS4P6__<wbr>rzDw@mail.gmail.com</a>><br>
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<br>
Hi,<br>
I have just discover RStoolbox and try simple simple script<br>
<br>
install.packages("RStoolbox")<br>
install.packages(raster)<br>
<br>
library(ggplot2)<br>
library(raster)<br>
library(rgdal)<br>
<br>
data(img)<br>
<br>
## Calculate NDVI<br>
ndvi <- spectralIndices(img, red = "C:/R_examples/VI/B3.tif", nir =<br>
"C:/R_examples/VI/B4.tif", indices = "NDVI")<br>
ndvi<br>
<br>
<br>
when I run it I got error message<br>
<br>
Error in match(xi, names(img)) : object 'img' not found<br>
<br>
Any suggestion is welcomed!<br>
<br>
Best Regards,<br>
<br>
Dragan<br>
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Message: 2<br>
Date: Sun, 11 Dec 2016 09:46:02 +0100<br>
From: Martin Wegmann <<a href="mailto:martin.wegmann@uni-wuerzburg.de">martin.wegmann@uni-wuerzburg.<wbr>de</a>><br>
To: Dragan Kaludjerovic <<a href="mailto:advancedgwt@gmail.com">advancedgwt@gmail.com</a>>,<br>
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Subject: Re: [RS-ecology] problem with RStoolbox<br>
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